# N741: 1946 Grumman G-21A

- Status: Valid registration
- Airframe: [Grumman G-21A](https://openairdocs.org/model/grumman-g-21a) (registry code 3951204, 8 seats)
- Engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008)
- Data sheets: [TCDS TC 654](https://openairdocs.org/tcds/TC%20654) (Frakes Aviation) (OpenAirDocs)
- Serial number: B-97
- Year built: 1946
- Type: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Airworthiness date: April 17, 1957
- Certificate issued: January 7, 2010
- Expires: July 31, 2029
- Mode S code: A9F640
- Registered owner: [Damico Samuel P](https://openairdocs.org/faa-owner/DAMICO%20SAMUEL%20P)
- Location: [Pittsford, NY](https://openairdocs.org/faa-place/NY/Pittsford)
- Owner type: Individual
- Owner's area on the map: 43.0569° N, 77.5210° W: Placed by OpenAirDocs at the center of ZIP code 14534, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=741
- Page: https://openairdocs.org/aircraft/N741

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pratt & Whitney R-985 model are included.

## ADs that may apply (OpenAirDocs): 10 in force

### Matched by airframe (Grumman G-21A)

- [AD 79-02-03](https://openairdocs.org/ad/79-02-03): Engine Restart · Grumman American G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B) with STC SA1-52. Effective Jan 29, 1979
- [AD 73-12-06](https://openairdocs.org/ad/73-12-06): Elevator and Rudder Torque Tube Failure · Grumman American G-21 and G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B). Effective Jun 14, 1973
- [AD 72-11-03](https://openairdocs.org/ad/72-11-03): Engine Fuel Starvation · Grumman American G-21 and G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B). Effective May 30, 1972
- [AD 53-24-01](https://openairdocs.org/ad/53-24-01): Stabilizer Strut  Terminal · Grumman American G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B). Effective Aug 17, 1971
- [AD 71-12-03](https://openairdocs.org/ad/71-12-03): Flex Drive Elevator Tab Control · Grumman American G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B). Effective Jun 10, 1971
- [AD 63-27-02](https://openairdocs.org/ad/63-27-02): Rudder Control Push Rod End Fittings · Grumman American G-21 and G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B). Effective Jan 20, 1964
- [AD 53-21-02](https://openairdocs.org/ad/53-21-02): Horizontal Stabilizer Strut · Grumman American G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B)
- [AD 50-15-01](https://openairdocs.org/ad/50-15-01): Mixture Control Rework · Grumman American G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B)
- [AD 49-16-01](https://openairdocs.org/ad/49-16-01): Fuel Tank Baffles · Grumman American G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B)
- [AD 46-38-01](https://openairdocs.org/ad/46-38-01): Vacuum System Tubing · Grumman American G-21 and G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B)

### Matched by engine (Pratt & Whitney R-985 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (2)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ANC08FA050](https://openairdocs.org/ntsb/ANC08FA050), Apr 10, 2008: Grumman G-21A (N741), Unalaska, AK, substantial damage. Probable cause: The pilot's failure to maintain clearance from a truck while landing, and the vehicle operator's decision to ignore runway warning signals. Contributing to the accident was an inoperative vehicle…
- [NTSB ANC94GA041](https://openairdocs.org/ntsb/ANC94GA041), Mar 21, 1994: Grumman G21A (N741), Mt. Fairweather, Canada, substantial damage. Probable cause: THE PILOT'S IMPROPER DECISION IN ATTEMPTING TO OUTCLIMB THE RISING TERRAIN WITH THE EXISTING AIRPLANE CLIMB PERFORMANCE. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE: THE PILOT'S INADEQUATE…

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20080409831909A](https://openairdocs.org/incident/20080409831909A), Apr 9, 2008: Grumav G21A (N741), Unalaska, AK, Substantial damage. (-23) At approximately 1630 adt on April 9, 2008, a Grumman goose (G-21A), N741, operated by peninsula airways under 14 CFR part 135 as a commuter, flight…
- [Accident 19940321006189A](https://openairdocs.org/incident/19940321006189A), Mar 21, 1994: Grumav G21 (N741), Gustauvs, AK, Substantial damage. Aircraft crashed after encountering downdraft. (-4)the state-operated amphibian was unable to outclimb rising terrain and impacted the margerie glacier, coming…

## Service difficulty reports (4)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR PNSA050301](https://openairdocs.org/sdr/PNSA050301), Mar 9, 2005: COUPLING. BROKEN. LT MAIN LANDING GEAR WOULD NOT RETRACT OR EXTEND. HUNG UP IN MID TRAVEL. DOVE AIRCRAFT AND PERFORMED SUDDEN PULL UP AND LANDING GEAR WENT TO DOWN AND LOCK POSIT
- [SDR DHL2001741004](https://openairdocs.org/sdr/DHL2001741004), Mar 27, 2001: WINDSHIELD. FAILED. CAPT WINDSHIELD SHATTERED AT FLIGHT LEVEL 350. ABNORMAL PROCEDURES ACCOMPLISHED. R&R L-1 WINDOW WITH SERVICABLE UNIT PER M/M 56-11-11. A/C OK FOR SERVICE. STATU
- [SDR PNSA990202](https://openairdocs.org/sdr/PNSA990202), Feb 23, 1999: VALVE. OUT OF POSITION. DURING CLIMB, PILOT NOTICED FUEL WAS NOT BURNING EVENLY FROM BOTH TANKS. UPON SELECTING THE RT TANK (THE FULLEST TANK) BOTH ENGINES LOST POWER. THE FUEL SELECTO
- [SDR PNSA980204](https://openairdocs.org/sdr/PNSA980204), Feb 20, 1998: CYLINDER. SEPARATED. LT ENGINE STARTED RUNNING ROUGH AND LOST POWER, RETURNED TO BASE. FOUND CYLINDER SEPARATED FROM CASE. REPLACED ENGINE.

## Service difficulty reports on N741 not matched to an aircraft (2)

They name N741, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR DHL2005741576](https://openairdocs.org/sdr/DHL2005741576), Apr 26, 2005: FRAME. CORRODED. FRAME CORRODED AT STA 1166 AT STR 29R. FRAME AT BS 1166 FROM STR 25L-STR 25R IS CORRODED BEYOND ALLOWABLE LIMITS. CUT OUT DAMAGE SECTION FROM 25L- STR 25R IAW B
- [SDR DHL2005741575](https://openairdocs.org/sdr/DHL2005741575), Apr 25, 2005: SEAT TRACK. CORRODED. SEAT TRACK 24L AT BS 760 TO 848 CORROSION. REMOVED SEAT TRACK AT BS 760-848 LBL 24 IAW B727 RSM 51-30-2 FIG 7. REPLACED, LOCATED AND DRILLED FASTENER HOLES IN P

## STCs that may be installed (OpenAirDocs) (40)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Grumman G-21A)

- [STC SA02571SE](https://openairdocs.org/stc/SA02571SE): Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display). Garmin International Inc
- [STC SA04837NY](https://openairdocs.org/stc/SA04837NY): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights. AeroLED's Holdings, LLC
- [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC
- [STC SA02738CH](https://openairdocs.org/stc/SA02738CH): Installation of L-3 Communications Avionics Systems. Acron Aviation Inc
- [STC SA04046CH PAGE 1](https://openairdocs.org/stc/SA04046CH%20PAGE%201): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc
- [STC SA39CH](https://openairdocs.org/stc/SA39CH): Installation of an Amphibian Landing Gear Position Advisory System/Laser Gear Advisory System. Wipaire Inc
- [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC
- [STC SA00346SE](https://openairdocs.org/stc/SA00346SE): Installation of Cleveland wheels and a modified Cleveland braking system per Cleveland Wheels & Brakes Drawing 50-83, Revision B, sketches labeled Drawing #1 - #4, and photographs dated may 7, 1996. CAS AeroSolutions LLC
- [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC
- [STC SA11174SC PAGE 1](https://openairdocs.org/stc/SA11174SC%20PAGE%201): Installation of BendixKing by Honeywell KSN 770 and KSN 765 WAAS LPV approach capable nav/comm systems. Honeywell International Inc (Bendix King)
- [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc
- [STC SA00344BO PAGE 1](https://openairdocs.org/stc/SA00344BO%20PAGE%201): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies
- [STC SA02153LA-D PAGE 1](https://openairdocs.org/stc/SA02153LA-D%20PAGE%201): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System. Garmin International Inc
- [STC SA6070NM](https://openairdocs.org/stc/SA6070NM): Installation of a 'quick-disconnect drain plug' on the engine rocker sump for the oil drain retrieval system after engine shutdown. West Coast Air Creations
- [STC SA01282NY](https://openairdocs.org/stc/SA01282NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830. Airwolf Filter Corporation
- [STC SA02212AK](https://openairdocs.org/stc/SA02212AK): Replacement of existing landing and/or taxi light reflector and bulbs with high intensity discharge (HID) lighting systems. Seaplanes North LLC
- [STC SA00382BO](https://openairdocs.org/stc/SA00382BO): Installation of Globalstar Antenna and Cradle provisions to support a Globalstar GPS-1700 in non-composite airplanes. Avidyne Corporation
- [STC SA02428SE](https://openairdocs.org/stc/SA02428SE): Installation of an Air Stream Switch for an electric time recording device on non-pressurized aircraft. Henry F Rogers/David E Polley
- [STC SA00343BO](https://openairdocs.org/stc/SA00343BO): Installation of a single configuration or a dual configuration Avidyne Corporation Integrated Flight Display, Model IFD540 loaded with Release 10.0 software (or later FAA approved release). Avidyne Corporation
- [STC SA00352BO PAGE 1](https://openairdocs.org/stc/SA00352BO%20PAGE%201): Installation of an Avidyne Corporation Mode A/C/S Transponder with ADS-B Out capability, Model AXP340 loaded with Version 3.13 software (or later FAA approved version),. Avidyne Corporation
- [STC SA02119SE PAGE 1](https://openairdocs.org/stc/SA02119SE%20PAGE%201): Installation of Garmin GDL 88 ADS-B UAT Transceiver System. Garmin International Inc
- [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric. Aviation Products Systems Inc
- [STC SA02442AK PAGE 1](https://openairdocs.org/stc/SA02442AK%20PAGE%201): Approval of the L-3 Communications NGT 2000/2500 ADS-B system. ADS-B Technologies, LLC
- [STC SA02121SE](https://openairdocs.org/stc/SA02121SE): Installation of Garmin GTS 825 (TAS) or GTS 855 (TCAS I) Traffic System. Garmin International Inc
- [STC SA00432SE](https://openairdocs.org/stc/SA00432SE): Installation of EGT 701 series fuel flow instrument. J P Instruments
- [STC SA00861SE](https://openairdocs.org/stc/SA00861SE): Installation of J.P. Instruments (JPI) fuel flow indicating system. J P Instruments
- [STC SA03148NY](https://openairdocs.org/stc/SA03148NY): The installation of the Latitude Technologies Corporation S100 Tracking System. Latitude Technologies Corporation
- [STC SA02016SE-D](https://openairdocs.org/stc/SA02016SE-D): Installation of Garmin GTS 800, GTS 820 or GTS 850 Traffic System. Garmin International Inc
- [STC SA02018SE-D](https://openairdocs.org/stc/SA02018SE-D): Provisions installation of Garmin GPS/XM Antennas in accordance with FAA Approved Model List (AML) SA02018SE-D, dated January 4, 2011, or later FAA approved revision, and FAA Approved GPS/XM Antenna STC Master Drawing List, Document No.: 005-00638-01, Revision 1 , approved on January 4, 2011, or later FAA approved revision. Garmin International Inc
- [STC ST02540AT-D](https://openairdocs.org/stc/ST02540AT-D): Installation of replacement fuel tank sealant system. FFC Manufacturing
- [STC SA101WE](https://openairdocs.org/stc/SA101WE): Installation of picture window. Atlantic Coast Sea Planes LLC
- [STC SA4-1467](https://openairdocs.org/stc/SA4-1467): Installation of retractable tip floats. Atlantic Coast Sea Planes LLC
- [STC SA8075SW](https://openairdocs.org/stc/SA8075SW): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER). Razorback Fabrics Inc
- [STC SA5714NM](https://openairdocs.org/stc/SA5714NM): Installation of electric propeller deicer kit. Teufel Nursery Inc
- [STC SA96NW](https://openairdocs.org/stc/SA96NW): Installation of Sorm Industries horizontal stabilizer forward support fitting. Sorm Industries
- [STC SA138SW](https://openairdocs.org/stc/SA138SW): Modify models for operation at a maximum gross weight of 9,000 pounds by installing retractable wing tip floats and 24 volt electrical system. Pan Air Corporation
- [STC SA551SW](https://openairdocs.org/stc/SA551SW): Modify Beechcraft C18 cowl to fit Grumman G-21A. Pan Air Corporation
- [STC SA552WE](https://openairdocs.org/stc/SA552WE): Installed Stewart-Warner 47,000 BTU Heater. McKinnon Enterprises Inc
- [STC SA02153LA-D](https://openairdocs.org/stc/SA02153LA-D) (historical): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System. Garmin International Inc
- [STC SA02153LA](https://openairdocs.org/stc/SA02153LA) (historical): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System. Garmin AT Inc

## Earlier aircraft with N741

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N741 before.

- [Cancelled 1930-03-20](https://openairdocs.org/deregistered/N741-1930-03-20): Curtiss Wright JN4C, S/N 71128, built 1918. Owner: [Work E Clyde](https://openairdocs.org/faa-owner/WORK%20E%20CLYDE), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth)

## Related

- Other Grumman G-21A aircraft: https://openairdocs.org/model/grumman-g-21a/aircraft.md
- The Pratt & Whitney R-985 series engine: https://openairdocs.org/engine/pratt-whitney-r-985-series.md

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