- Registered owner
- Runyon Aviation LLC
- Location
- Fort Worth, TX
- Owner type
- LLC
- Serial number
- B-139
- Year built
- 1946
- Type
- Fixed wing multi engine
- Engine
- Reciprocating
- Airworthiness
- Standard, normal
- Airworthiness date
- July 17, 1978
- Certificate issued
- October 9, 2025
- Expires
- October 31, 2032
- Mode S code
- A2054C
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Pratt & Whitney R-985 model are included below.
On this page
Airworthiness directives that may apply · 10
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1964 | 1 |
|---|---|
| 1971 | 2 |
| 1972 | 1 |
| 1973 | 1 |
| 1979 | 1 |
Airframe · Grumman G-21A
AD 79-02-03Engine RestartAD 73-12-06Elevator and Rudder Torque Tube FailureAD 72-11-03Engine Fuel StarvationAD 53-24-01Stabilizer Strut TerminalAD 71-12-03Flex Drive Elevator Tab ControlAD 63-27-02Rudder Control Push Rod End FittingsAD 53-21-02Horizontal Stabilizer StrutAD 50-15-01Mixture Control ReworkAD 49-16-01Fuel Tank BafflesAD 46-38-01Vacuum System TubingInformation bulletins that may apply
Advisory, not mandatory.
No bulletins matched this aircraft’s models
NTSB investigations · 4
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
NTSB ANC04LA038Accident · No injuriesLimited investigationFinal reportUnalaska, AKThe inadvertent ground loop/swerve by the second pilot during the landing roll, and the first (check) pilot's inadequate supervision of the second pilot, which resulted in a loss of control and substantial damage to the airplane. Factors associated with the…NTSB ANC98LA038Accident · No injuriesLimited investigationFinal reportDutch Harbor, AKThe pilot-in-command's failure to identify the swells prior to landing. A factor was the water swells.NTSB ANC93IA026Incident · No injuriesIncident investigationFinal reportAkutan, AKThe incident was caused by the pilots improper compensation for the winds. Factors were the microburst, the rough water, and the pilot's inadequate evaluation of the weather conditions.NTSB LAX79FA084Accident · 1 fatalClosedAvalon, CA
FAA incident reports · 6
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Accident 20040404006449ARoll-Out (Fixed Wing) · Unalaska, AK(-23) The flying pilot at the time of the accident was the second-in-command (SIC), [privacy data omitted]. [privacy data omitted] Had received a 14 CFR, part 135.293 & 135.299 proficiency/line checkride the same day and just prior to the accident. A pnsa…Accident 19980415006889ALevel Off Touchdown · Unalaska, AKUnable land amphibian at dut. Landed on wataer to await clearing. Porpoised on a swell damaged horizontal stabilize. (From .4) the pilot landed the seaplane in a protected bay in order to wait for the weather to improve at his destination. He said the wind…Incident 19930107000249ILevel Off Touchdown · Akutan, AKOn water landing pilot reported wind gust. Bounced. Aircraft then hit water with left wing low. Float broke off.Incident 19861107072769IGround Taxi, Other Airplane · Kodiak, AKDuring turn wing float submerged and float attachment fitting broke. Float separated and aircraft capsized.Accident 19790917036239ATo Init Climb(1st Pwr Reduct) · Catalina Island, CAElevator control cable parted just after liftoff. Amphibian hit water, nose down, sank.Incident 19790307018879IForced/Precautionary Landing · Long Beach, CALeft engine quit, right engine ran intermittently during takeoff. Probable fuel cell design problem plus line clog.
Service difficulty reports · 3
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
SDR 2006FA0000740Exhaust Duct · crackedEXHAUST DUCT ASSY CRACKED AND MISSING PARTS.SDR PNSA051105Cowling · departedWHILE IN CRUISE FLIGHT THE LT ENGINE COWLING DEPARTED THE AIRCRAFT. THE COWLING'S WAS NOT RECOVERED, FLIGHT WAS OVER WATER. AN UNEVENTFUL LANDING WAS MADE. SINCE THE FLIGHT WAS OVER WATER IT COULD NOT BE DETERMINED WHY THE COWLINGS DEPARTED THE AIRCRAFT.SDR PNSA970203Float · damagedDAMAGED RT FLOAT DURING TAXI UP BOAT RAMP.
STCs that may be installed · 40
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Grumman G-21A
STC SA02571SEInstallation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display).STC SA04837NYInstallation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lightsSTC SA04652CHTo allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification
Earlier aircraft with this N-number · 2
These aircraft carried N22932 before the one registered now. The FAA can assign a mark to another aircraft once a registration is cancelled.