ATC controller

VFR Flight Following – a pilot’s guide

If “flight following” is a new term, don’t worry, you’re not alone. It’s not exactly a staple in many Private pilot training programs and is easy to bypass on the checkride. But let’s rectify that here and now because it’s a service that every VFR pilot should take advantage of and it could even be a life saver. Flight following is a relatively simple concept – it’s an aircraft flying under VFR that is taking advantage of Air Traffic Control (ATC) services. Functionally, it indicates the flight is radar identified by ATC and a number of advisories may be available from the controller.

Some of the mystique of VFR flight following is a function of initiating ATC interactions which immediately invokes fear for many pilots. Because the service is provided on a workload permitting basis, and involves multiple layers of service, there’s not exactly uniform delivery among Center or Approach control facilities. The combination of these realities has resulted in misinformation, misunderstandings, and even no awareness of its existence.

So what is flight following?

What we refer to as VFR flight following is largely described in AIM, 4-1-15 (Radar Traffic Information Service) which focuses on traffic advisories. ATC will serve as another set of eyes in the sky to keep you apprised of other traffic targets that could be a threat. You also gain the benefit of safety alerts from ATC. These are alerts that can be issued by the controller for traffic, terrain or other obstructions and indicates an immediate threat. If you should hear the term “safety alert” on frequency, pay close attention and prepare to respond quickly.

As emphasized in the AIM, and is true in practice, flight following services and advisories are provided at the controllers discretion, and while controllers always strive to assist participating aircraft in every way possible, their primary responsibility is separating IFR traffic. Many factors, including workload and frequency congestion, could prevent the controller from providing advisories so it should always be viewed as a supplemental tool for seeing and avoiding traffic or other obstacles.

How do I obtain flight following?

Flight following can be available anywhere radar coverage is available which is extensive even at relatively low altitudes in the east. Radar coverage is spottier in the west, but generally available at normal cruise altitudes. For low-level, terminal radar coverage, you would generally need to be operating near a Class B or C airport or Class D with terminal radar service. If in doubt, ask the local pilots about the extent of coverage in the area and even the best frequencies for requesting service.

For locating the correct frequency to request flight following, consult the Chart Supplement (A/FD) or sectional chart for published Center or Approach control frequencies. Many GPS navigators and charting apps will also provide frequency information. But remember, even with radar coverage available, flight following is only provided on a workload-permitting basis, so it’s no guarantee, but always worth the request.

What do I say to ATC?

Pilot talking on radio

Flight following is a great way to increase your confidence.

While not intended as added pressure, suffice it to say, a controller is more likely to accept and provide services to a pilot that doesn’t sound as if they will be overly burdensome. In other words, you should strive to sound like you know what you’re doing and have some self-awareness. No, this isn’t intended to be mean or unfair, it’s simply a controller protecting their primary obligation – separating IFR traffic (not providing VFR advisories).

To help answer this important question of what information to provide and how to say it, we went to the National Air Traffic Controllers Association (NATCA) representing nearly 20,000 controllers across the country. The controller will want to know your present position, aircraft type/tail number, altitude, and your destination. There are important caveats.

  • If the controller is working a busy frequency, start with an initial call that provides your type/tail number and simply that you have a VFR request.

“Nashville Approach, Cessna 12345, VFR request.”

 

  • When the controller is in a position to receive a request, issue a code, and radar identify, you’re likely to hear a response similar to this:

“Cessna 12345, Nashville Approach, go ahead with your request.”

 

  • If there is some breathing room on frequency, it’s ok to minimize transmissions and provide more information in the initial call.

“Nashville Approach, Cessna 12345, three miles south of Lebanon at five-thousand, five-hundred, VFR to Greene County Airport, request flight following.”

 

  • When providing your destination, if it’s an airport located within range of that ATC facility, or a major metropolitan airport, it would be acceptable to provide the airport name or ID, but if you’re traveling a considerable distance, it’s best to stick with a major city and/or your on-course heading.

“Nashville Approach, Cessna 12345, three miles south of Lebanon at five-thousand, five-hundred VFR to Myrtle Beach, request flight following.”

 

  • If traversing multiple facilities, it may also be acceptable to request hand-offs to subsequent ATC facilities. This eliminates the need to make initial calls with all of the requisite flight information as your flight information is passed along from one controller to the next. But keep in mind, this does require a little more effort on the part of the controller. If your flight following is terminated by ATC, you can always make a new request with the next facility.

“Nashville Approach, Cessna 12345, three miles south of Lebanon at five-thousand, five-hundred VFR to Myrtle Beach, request flight following with hand-offs.”

 

  • If ATC is able to accommodate your request, your next transmission will likely be a transponder “squawk” code.   As a VFR pilot, you may have flown exclusively with your transponder code set to 1200, if given flight following, you will be asked to enter a unique code.  The controller will advise when radar contact is established. As a VFR aircraft, altitude is the pilot’s discretion unless there has been an explicit assignment by ATC for traffic purposes. You should advise the controller of any altitude changes.

“Nashville Approach, Cessna 12345, climbing VFR to seven-thousand, five-hundred.”

 

How is a hand-off to another ATC facility handled?

If the controller has coordinated a hand-off, meaning your flight information has been passed on to the next facility and a new controller is awaiting your check-in, the instructions will sound similar to this:

“Cessna 12345, contact Memphis Center, one-two-eight, point two-two.”

 

If a hand-off was not coordinated, you may be provided a suggested frequency (or not) and your current squawk code will need to be reset to VFR, 1200. You can always tell whether a hand-off has been coordinated by whether the controller’s transmission is an instruction versus a suggestion.

“Cessna 12345, radar service terminated, squawk VFR. For further flight following, suggest Memphis Center on one-two-eight, point two-two.”

 

What are some Do’s and Don’ts of flight following?

  • DO listen up! Don’t make the controller’s job more difficult by missing your tail number on frequency.
  • DO have the applicable flight plan information at the ready (airport ID, requested altitude, on-course heading, etc.)
  • DO be an active participant in seeing and avoiding other air traffic.
  • DO monitor the emergency frequency, 121.5 so that you may be able to render assistance to other aircraft in need and also as a backstop in case ATC has difficulty raising you on the primary frequency. Often ATC will utilize the emergency frequency as a last resort to reach you.

 

  • DON’T be the pilot who takes 3 calls to respond. See Do #1 – listen up!
  • DON’T assume ATC is taking full responsibility for other air traffic. Always watch for traffic.
  • DON’T rely on ATC for navigation. You may get an inquiry if it appears you’re straying well off course, but navigation remains the pilot’s responsibility.
  • DON’T rely on ATC for weather avoidance. Workload and equipment permitting, you may hear a weather advisory, but it’s completely discretionary and depends on the equipment available to the controller. You may inquire about potential weather hazards or request a frequency change to call flight service.

 

Does ATC consider flight following a nuisance or a bother?

To the contrary, often times an ATC facility would prefer an aircraft be on frequency as it eliminates a relative unknown (in terms of your intentions) and makes it easier for a controller to complete his primary task of separating IFR traffic. Be a good, considerate participant and you’ll get along swimmingly. 

 

Do I have to terminate flight following or will ATC do that?

It depends. If you’re ready to change to a local advisory frequency, you may initiate a termination of service.

“Nashville Approach, Cessna 12345, cancel radar service.”

 

If you need to leave the frequency briefly, you can make that request without terminating service.

“Nashville Approach, Cessna 12345, request a frequency change to call flight service.”

 

If you’re venturing outside of radar coverage, or if workload no longer permits flight following, it could be initiated by ATC.

“Cessna 12345, radar service terminated, squawk VFR, frequency change approved.”

 

What are the additional benefits of VFR flight following?

In addition to the obvious benefits of traffic advisories, safety alerts, and good situational awareness of surrounding traffic, VFR flight following can benefit you by:

  • Providing helpful information and assistance in the event of an emergency such as vectors to the nearest airport
  • Possibility of weather advisories or obvious course deviations
  • Benefits of hearing pilot reports
  • Benefit of hearing general weather advisory broadcasts such as convective SIGMENTS
  • Practice and added confidence in interacting with ATC and listening to other communication

 

If you had the choice of flying with a safety pilot or not, of course you would welcome a safety pilot. If you had the benefit of another trained aviation professional to assist you in an emergency, of course you would accept input. If you had a helping hand that could potentially provide safety alerts and even assist in weather avoidance, of course you would heed the advice. All of this and more is available to you FREE through our well-trained and capable air traffic controllers.

Download the NATCA Guide to VFR Flight Following.

Video: a day in the life of a Caribbean skydive pilot

There are almost as many aviation jobs as there are pilots. In this video, you’ll see a typical day in the life of a pilot flying a Cessna 206, carrying skydivers over beautiful Saint Martin. It’s definitely not the typical point A to point B flight, but it’s still a lot of fun. Just remember the door is off.

Video courtesy of Pilot Bambi.

FAA From the Flight Deck Video Series

FAA’s From the Flight Deck video series provides pilots with actual runway approach and airport taxiway footage captured with cockpit mounted cameras, combined with diagrams and visual graphics to clearly identify hot spots and other safety-sensitive items. See video from some of the country’s busiest airports.

View the map below for From the Flight Deck videos and links to location-specific safety information. New locations will be added to the map as videos become available.

Friday photo: danger lurking behind the clouds

The moment: danger lurking behind the clouds

The place: Near Asheville Regional Airport (KAVL), Asheville, NC

The aircraft: Piper Aztec

The memory: While I would have preferred a clearer view of the Blue Ridge Mountains near Asheville, NC on the way back north from a family vacation in South Carolina, the obscured view east toward Mt. Mitchell illustrates the dangers that can lurk in mountainous areas. This was an IFR trip for sure and routing and altitudes should always be carefully selected so you can enjoy the sights from a safe vantage point.

Want to share your “Friday Photo” of your first solo, checkride or other special moment? Send your photo and description (using the format above) to: [email protected]

Air Traffic Control room

TRACON Directory

On occasion, there may be a need to contact a Terminal Radar Approach Control (TRACON) facility by phone. For IFR pilots, it’s a convenient method for obtaining or canceling an IFR clearance if a direct radio frequency is not available. For VFR pilots, you may want to check on a good time of day for a VFR arrival.

While FAA has a published TRACON numbers for many years as part of a modernization effort, it’s not always easy to quickly locate a facility’s contact information. It’s always good practice to check airport listings in the chart supplement for a clearance delivery phone number, but Student Pilot News has also published this directory as a reference tool. The directory includes stand-alone TRACONs and those co-located with Control Towers.

Please submit updates or corrections to [email protected].

Download a PDF copy.

LocID Facility Name City State Phone
A11 Anchorage Anchorage ALASKA 907-271-2700
A80 Atlanta Peachtree City GEORGIA 678-364-6131
A90 Boston Merrimack NEW HAMPSHIRE 603-594-5500
ABE Allentown Allentown PENNSYLVANIA 800-728-6322
ABQ Albuquerque Albuquerque NEW MEXICO 505-842-4366
ACT Waco Waco TEXAS 817-858-7584
ACY Atlantic City Atlantic City NEW JERSEY 703-771-3587
AGS Augusta Augusta GEORGIA 706-771-1777
ALB Albany Latham NEW YORK 518-862-2299
ALO Waterloo Waterloo IOWA 630-906-8921
AMA Amarillo Amarillo TEXAS 505-856-4861
ASE Aspen Aspen COLORADO 303-651-4257
AUS Austin Austin TEXAS 512-269-7865
AVL Asheville Fletcher NORTH CAROLINA 770-210-7696
AVP Wilkes-Barre Avoca PENNSYLVANIA 570-655-2084
AZO Kalamazoo Portage MICHIGAN 269-964-0283
BFL Bakersfield Bakersfield CALIFORNIA 661-575-2079
BGM Binghamton Johnson City NEW YORK 631-468-1425
BGR Bangor Bangor MAINE 207-561-2521
BHM Birmingham Birmingham ALABAMA 205-769-3907
BIL Billings Billings MONTANA 406-255-2798
BIS Bismarck Bismarck NORTH DAKOTA 701-223-8790
BNA Nashville Nashville TENNESSEE 615-781-5460
BOI BOISE Boise IDAHO 208-364-5860
BTR Baton Rouge Baton Rouge LOUISIANA 225-354-2142
BTV Burlington S. Burlington VERMONT 802-657-4401
BUF Buffalo Cheektowaga NEW YORK 440-774-0490
C90 Chicago Elgin ILLINOIS 847-289-0926
CAE Columbia West Columbia SOUTH CAROLINA 803-822-5242
CAK Akron-Canton North Canton OHIO 440-774-0223
CHA Chatanooga Chattanooga TENNESSEE 423-855-6478
CHS Charleston Charleston SOUTH CAROLINA 843-414-2832
CID Cedar Rapids Cedar Rapids IOWA 630-906-8921
CKB Clarksburg Bridgeport WEST VIRGINIA 304-84-6676
CLE Cleveland Cleveland OHIO 216-352-2323
CLT Charlotte Charlotte NORTH CAROLINA 704-344-6487
CMH Columbus Columbus OHIO 614-338-8537
CMI Champaign Savoy ILLINOIS 217-355-4069
COS Colorado Springs Peterson AFB COLORADO 719-556-9105
CPR Casper Casper WYOMING 307-472-8940
CRP Corpus Christi Corpus Christi TEXAS 361-299-4230
CRW Charleston Charleston WEST VIRGINIA 304-344-5867
CVG Cincinnati Erlanger KENTUCKY 859-372-6440
D01 Denver Denver COLORADO 303-342-1916
D10 Dallas – Ft Worth Dallas-Fort Worth TEXAS 817-858-7584
D21 Detroit Detroit MICHIGAN 800-499-8181
DAB Daytona Beach Daytona Beach FLORIDA 386-226-3939
DAY Dayton Vandalia OHIO 303-342-1600
DLH Duluth Duluth MINNESOTA 218-740-5950
DSM Des Moines Des Moines IOWA 515-974-8016
ELM Elmira Elmira NEW YORK 607-739-1971
ELP El Paso El Paso TEXAS 505-756-4861
ERI Erie Erie PENNSYLVANIA 716-626-6920
EUG Eugene Eugene OREGON 541-607-4674
EVV Evansville Evansville INDIANA 812-436-4690
F11 Central Florida Orlando FLORIDA 407-825-3398
FAI Fairbanks Fairbanks ALASKA 907-474-0050
FAR Fargo Fargo NORTH DAKOTA 701-235-8894
FAT Fresno Fresno CALIFORNIA 559-487-5405
FAY Fayetteville Fayetteville NORTH CAROLINA 703-771-3587
FLO Florence Florence SOUTH CAROLINA 843-669-5194
FNT Flint Flint MICHIGAN 269-459-3345
FSD Sioux Falls Sioux Falls SOUTH DAKOTA 651-463-5588
FSM Fort Smith Fort Smith ARKANSAS 479-649-2416
FWA Fort Wayne Fort Wayne INDIANA 630-906-8921
GEG Spokane Spokane WASHINGTON 509-742-2522
GGG Longview Longview TEXAS 817-858-7584
GPT Gulfport Gulfport MISSISSIPPI 228-265-6151
GRB Green Bay Green Bay WISCONSIN 920-431-5741
GRR Grand Rapids Grand Rapids MICHIGAN 269-459-3345
GSO Greensboro Greensboro NORTH CAROLINA 336333-5119
GSP Greer Greer SOUTH CAROLINA 770-210-7692
GTF Great Falls Great Falls MONTANA 406-454-7555
HLN Helena Helena MONTANA 406-449-5756
HSV Huntsville Huntsville ALABAMA 256-542-2070
HTS Huntington Huntington WEST VIRGINIA 317-247-2411
HUF Terre Haute /Hulman Terra Haute INDIANA 812-877-7581
I90 Houston Houston TEXAS 713-847-1400
ICT Wichita Wichita KANSAS 316-350-1520
ILM Wilmington Wilmington NORTH CAROLINA 703-771-3587
IND Indianapolis Indianapolis INDIANA 317-484-6600
ITO Hilo Hilo HAWAII 808-840-6262
JAN Jackson Jackson MISSISSIPPI 601-965-4625
JAX Jacksonville Jacksonville FLORIDA 904-741-0284
K90 Cape Falmouth MASSACHUSETTS 508-563-1400
L30 Las Vegas Las Vegas NEVADA 702-262-5978
LAN Lansing Lansing MICHIGAN 269-459-3345
LBB Lubbock Lubbock TEXAS 817-858-7584
LCH Lake Charles Lake Charles LOUISIANA 337-480-3103
LEX Lexington Lexington KENTUCKY 859-514-7890
LFT Lafayette Lafayette LOUISIANA 337-262-2729
LIT Little Rock Little Rock ARKANSAS 501-379-2908
M03 Memphis Memphis TENNESSEE 901-322-3350
M98 Minneapolis Minneapolis MINNESOTA 612-713-4000
MAF Midland Midland TEXAS 432-563-2123
MBS Saginaw Freeland MICHIGAN 269-459-3345
MCI Kansas City Kansas City MISSOURI 816-329-2700
MDT Harrisburg Middletown PENNSYLVANIA 800-932-0712
MFD Mansfield Mansfield OHIO 440-774-0223
MGM Montgomery Hope Hull ALABAMA 334-284-4575
MIA Miami Miami FLORIDA 305-869-5400
MKE Milwaukee Milwaukee WISCONSIN 630-906-8921
MKG Muskegon Muskegon MICHIGAN 269-459-3345
MLI Quad City Milan ILLINOIS 630-906-8921
MLU Monroe Monroe LOUISIANA 318-327-5641
MOB Mobile Mobile ALABAMA 251-662-6236
MSN Madison Madison WISCONSIN 630-856-4562
MSY New Orleans New Orleans LOUISIANA 504-471-4350
MWH Grant County Moses Lake WASHINGTON 509-762-2842
MYR Myrtle Beach Myrtle Beach SOUTH CAROLINA 843-477-2727
N90 New York Westbury NEW YORK 718-656-0335
NCT Northern California Mather CALIFORNIA 916-366-4001
NMM Meridian Meridian MISSISSIPPI 601-679-3691
OKC Oklahoma City Oklahoma City OKLAHOMA 405-681-5683
ORF Norfolk Virginia Beach VIRGINIA 757-464-0757
P31 Pensacola Pensacola FLORIDA 850-266-6884
P50 Phoenix Phoenix ARIZONA 602-379-4226
P80 Portland Portland OREGON 503-493-7500
PBI Palm Beach West Palm Beach FLORIDA 561-684-9047
PCT Potomac Warrenton VIRGINIA 540-349-7500
PHL Philadelphia Philadelphia PENNSYLVANIA 215-492-4100
PIA Peoria Peoria ILLINOIS 630-906-8921
PIT FAA Pittsburgh ATC Pittsburgh PENNSYLVANIA 412-269-9237
PSC Pasco Pasco WASHINGTON 509-542-4209
PVD Providence Warwick RHODE ISLAND 401-738-8945
PWM Portland Portland MAINE 207-874-7320
R90 Omaha Bellevue NEBRASKA 402-682-4395
RDG Reading Reading PENNSYLVANIA 800-932-0712
RDU Raleigh-Durham Morrisville NORTH CAROLINA 919-380-3125
RFD Rockford Rockford ILLINOIS 630-906-8921
ROA Roanoke Roanoke VIRGINIA 540-563-1307
ROC Rochester Rochester NEW YORK 440-774-0490
ROW Roswell Roswell NEW MEXICO 505-856-4861
RST Rochester Rochester MINNESOTA 507-727-8111
RSW Fort Myers Fort Myers FLORIDA 239-768-1377
S46 Seattle Burien WASHINGTON 206-214-4600
S56 Salt Lake City Salt Lake City UTAH 801-325-9600
SAT San Antonio San Antonio TEXAS 210-805-5507
SAV Savannah Savannah GEORGIA 912-964-3205
SBA Santa Barbara Goleta CALIFORNIA 661-575-2079
SBN South Bend South Bend INDIANA 630-856-4561
SCT Southern California San Diego CALIFORNIA 858-537-5800
SDF Standiford Louisville KENTUCKY 502-375-7499
SGF Springfield Springfield MISSOURI 417-868-5620
SHV Shreveport Barksdale AFB LOUISIANA 817-858-7584
SPI Springfield Springfield ILLINOIS 217-535-1425
SUX Sioux Gateway Sioux City IOWA 651-463-5588
SYR Syracuse North Syracuse NEW YORK 315-455-6218
T75 St Louis St. Charles MISSOURI 314-890-1000
TLH Tallahassee Tallahassee FLORIDA 850-942-8311
TOL Toledo Swanton OHIO 419-865-1495
TPA Tampa Tampa FLORIDA 813-371-7700
TRI Tri-Cities Blountville TENNESSEE 770-210-7692
TUL Tulsa Tulsa OKLAHOMA 918-831-6714
TWF Twin Falls Twin Falls IDAHO 208-734-710
TYS Knoxville Loisville TENNESSEE 770-210-7692
U90 Tucson Tucson ARIZONA 520-829-6121
Y90 Yankee Windsor Locks CONNECTICUT 800-386-3500
YNG Youngstown Vienna OHIO 330-856-4806

More acronyms…what’s an STC and TSO?

We live and breath acronyms in aviation. Accept it or else. Two more that you may not be all that familiar with are “TSO”, Technical Standard Order, and “STC”, Supplemental Type Certificate.

TSO vs STC

When looking at approvals for aviation equipment, the two terms are often used interchangeably, but are not the same. By definition, an STC is something that affects the type certificate of the aircraft. A type certificate is approved and issued the the FAA when an aircraft is manufactured and confirms that the aircraft is manufactured according to an approved design and complies with airworthiness standards. The type certificate is very prescriptive and dictates everything related to the design and build.

To alter the the type certificate for the aircraft, one would need to apply for, and receive approval of, a Supplemental Type Certificate (STC). For example, if you want to replace the navigational lights or seat belts on your aircraft, the replacement lights and belts would need to have an STC issued for your specific type of aircraft. The new equipment manufacturer would manage this process and advertise the replacement as compatible with your model. Keep in mind, lights that are STC’d for a Boeing 737, aren’t normally STC’d for a Cessna 172. 

A TSO, on the other hand, is a minimum performance standard for specified materials, parts, and appliances used on civil aircraft. When authorized to manufacture a material, part, or appliances to a TSO standard, this is referred to as TSO authorization. Receiving a TSO authorization is not an approval to install and use the article in the aircraft. It only means that the article meets the specific TSO. There are different TSOs for different parts of the aircraft. The TSO for life vests is of course different than the TSO for headsets. 

TSO for headsets

When evaluating the reams of data available on aviation headsets, you will inevitably encounter models that use TSO – the FAA’s term for indicating it is approved for use on an airplane.  

This might strike you as odd. Why would a portable headset fall under the scrutiny of the FAA? After all, neither your flight bag nor your flashlight needs an FAA approval. Why would any gear that is not permanently attached to the aircraft need TSO?

The answer for most pilots is that it doesn’t matter. Operating under FAR Part 91, general aviation flying, there is no requirement as to what type of headset is used in the cockpit. The FAA comes into play when you look at, or transition, to airline flying (Part 121 air carrier certification). All airlines are required to comply with more stringent FAA regulations. The standards are provided to the airline in the form of Operations Specifications or “OpSpecs” and can require, as part of the communication equipment, for a headset to meet TSO standards.

These standards, and how they are applied, may vary depending on the airline. I’ve heard reports of airline policies requiring a TSO’d headset to be available in the cockpit, yet pilots have the option to use their personal headset instead of the issued headset or headset that was delivered with the aircraft. Other policies might specifically require the use of a TSO’d headset for communication. If you’re worried about violating a company policy, check with your chief pilot prior to purchasing a non-TSO’d headset.

If you’re a new flight student and are looking to transition to the airlines someday, it might be worth considering the TSO’d headset options. Keep in mind that most pilots take years from the time they start, to the time they make it to an airline, and during that time, may transition through several headsets. However, headsets do represent a sizable investment.

What makes a Headset TSO’d?

Why buy a TSO’d headset if you don’t have to? Is there a benefit to having a headset that has the FAA’s stamp of approval? What does a manufacturer of headsets have to do to get the approval? Is this like the “FAA-approved” alternator that can be found for 80% less at the local automotive store?

Not exactly. The FAA won’t grant a TSO to just any headset. There is a long list of requirements that must be met prior to the granting of that designation. Some of it is crossing t’s and dotting i’s, but the testing procedure is pretty intense. It includes:

  • Mechanical durability evaluated through the tests such as drop, vibration, cable/connector pull and bending, etc.
  • Environmental robustness evaluated through the exposure of high/low temperature, humidity, fluid, altitude, decompression, electrostatic discharge, flame, etc.
  • Electroacoustic performance evaluated through various parameters such as sensitivity, frequency response, distortion, and noise for both microphone and speaker, ANR, etc.  
  • RF immunity tested in terms of susceptibility to RF signals including lightning, voltage spikes, etc.

In addition to physical testing, a headset manufacturer must convince the FAA that it plans to service and support the headset for many years to come. Clearly-labeled parts that are replaceable, FAA inspections of the manufacturing facility, alerting the FAA to changes to parts, quality testing—the sheer volume of paperwork involved in getting a TSO and maintaining the TSO is extensive. It’s no wonder that only a few manufacturers complete the TSO process. 

If you are occupying the left seat on a major airline flying heavy iron across the pond, you’ll probably need a TSO’d headset. If you’re going to be in a single-engine bug smasher for the next four years, you probably don’t need to check the TSO box. 

If you can’t sleep at night and want to check out the current TSO-C139, you can find the complete document here. Don’t forget the referenced 250+ page document, RTCA/DO-160E: Environmental Conditions and Test Procedures for Airborne Equipment. I’d suggest reviewing the riveting chapter on salt fog testing, or maybe magnetic effect? It’s a real page-turner.