# N168WS: 1946 Grumman G-73

- Status: Valid registration
- Airframe: [Grumman G-73](https://openairdocs.org/model/grumman-g-73) (registry code 3951802, 12 seats)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Data sheets: [TCDS A-783](https://openairdocs.org/tcds/A-783) (Frakes Aviation) (OpenAirDocs)
- Serial number: J-5
- Year built: 1946
- Type: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, transport
- Airworthiness date: September 8, 1997
- Certificate issued: April 26, 1997
- Expires: January 31, 2030
- Mode S code: A1116B
- Registered owner: [Pantechnicon Aviation Ltd](https://openairdocs.org/faa-owner/PANTECHNICON%20AVIATION%20LTD)
- Location: [Minden, NV](https://openairdocs.org/faa-place/NV/Minden)
- Owner type: Corporation
- Owner's area on the map: 38.9971° N, 119.7353° W: Placed by OpenAirDocs at the center of ZIP code 89423, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=168WS
- Page: https://openairdocs.org/aircraft/N168WS

From the FAA registry file of October 22, 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 R1340 model are included.

## ADs that may apply (OpenAirDocs): 8 in force

### Matched by airframe (Grumman G-73)

- [AD 2006-01-51](https://openairdocs.org/ad/2006-01-51): Corrosion of the wings from wing station (WS) 77L · Frakes G-73. Effective Jan 17, 2006
- [AD 99-19-07](https://openairdocs.org/ad/99-19-07): AFM - Limitation Section - Ice Protection System · Frakes G-73. Effective Dec 27, 1999
- [AD 98-04-33](https://openairdocs.org/ad/98-04-33): AFM - Limitations Section - Icing · Frakes G-73. Effective Mar 25, 1998
- [AD 97-13-03](https://openairdocs.org/ad/97-13-03): AFM - Limitations Section · Frakes G-73 with STC SA2323WE. Effective Jul 25, 1997
- [AD 97-01-12](https://openairdocs.org/ad/97-01-12): Ground Proximity Warning System · Airtell International Ground Proximity Warning System, Mystere-Falcon 200, EMB-110P1 and 20 more. Effective Feb 25, 1997
- [AD 87-25-08](https://openairdocs.org/ad/87-25-08): Elevator Control System · Frakes G-73. Effective Jan 19, 1988
- [AD 80-13-02](https://openairdocs.org/ad/80-13-02): Placard-Engine Fire Emergency Procedures · Frakes G-73. Effective Jun 20, 1980
- [AD 48-03-04](https://openairdocs.org/ad/48-03-04): Landing Gear Hydraulic Hose · Frakes G-73

### Matched by engine (Pratt & Whitney R1340 series)

None in force.

## Information bulletins (advisory) (1 in force)

- [SAIB NM-06-18](https://openairdocs.org/saib/NM-06-18): . Issued Dec 23, 2005

## NTSB investigations (1)

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 MIA98IA001](https://openairdocs.org/ntsb/MIA98IA001), Oct 1, 1997: Grumman G-73 (N168WS), Fort Lauderdale, FL, incident, minor damage. Probable cause: the partial failure of a component of the hydraulic system resulting in the collapse of the nose landing gear during the landing roll.

## FAA accident and incident reports (1)

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.

- [Incident 19971001045069I](https://openairdocs.org/incident/19971001045069I), Oct 1, 1997: Gulstm G73 (N168WS), Ft Lauderdale, FL, Minor damage. Scraping noise rollout followed by nosegear collapse. The landing gear selector valve was by passing fluid.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs) (47)

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-73)

- [STC ST01305WI-D](https://openairdocs.org/stc/ST01305WI-D): Modification of a Collins ALT-50A or ALT-55B Radio Altimeter system installation to a Collins ALT-1000 or ALT-4000 Radio Altimeter system installation in accordance with Collins Drawing Index as listed on AML No. ST01305WI-D, Revision -, or later FAA approved revision. Rockwell Collins Inc
- [STC SA02511SE](https://openairdocs.org/stc/SA02511SE): Installation of replacement fuel quantity indicator sending unit(s). CiES Inc
- [STC SA39CH](https://openairdocs.org/stc/SA39CH): Installation of an Amphibian Landing Gear Position Advisory System/Laser Gear Advisory System. Wipaire Inc
- [STC SA651GL](https://openairdocs.org/stc/SA651GL): Install Cleveland (Parker Hannifin) wheel and brake conversion kit, P/N 199-113. Kaman Corporation Aircraft Wheel and Brake LLC
- [STC SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc
- [STC SA10236SC](https://openairdocs.org/stc/SA10236SC): Installation of a GDC 31 Roll Steering Converter. DAC International Inc
- [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation
- [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 SA319SW](https://openairdocs.org/stc/SA319SW): Structural installation of McMillan 7501XM radome and RCA AVQ-55 antenna mount. Associated Air Center, Inc. - c/o CT Corporation System
- [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 ST334CH](https://openairdocs.org/stc/ST334CH): Installation of Superflite 102 fabric. Aviation Products Systems Inc
- [STC ST00673WI-D](https://openairdocs.org/stc/ST00673WI-D): Modification of Collins VHF-22A/VHF-22B VHF COMM Receiver Transmitter with CTL-22 Control Pro Line II System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System installation. Rockwell Collins Inc
- [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc
- [STC SA1054GL](https://openairdocs.org/stc/SA1054GL): Removal of P/N 213763 propeller synchrophaser control box and electrical connector, and installation of P/N A213796 control box, electrical connector, and remote switch. Ontic Engineering and Manufacturing Inc
- [STC ST01142WI-D](https://openairdocs.org/stc/ST01142WI-D): Modification of a single or dual Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92 control head to a Flight ID capable Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92E control head. Rockwell Collins Inc
- [STC SA4383SW-D](https://openairdocs.org/stc/SA4383SW-D): Installation of Model AK976, an autopilot with 1C753 yaw damper system. Tom R. Tracy
- [STC SA8075SW](https://openairdocs.org/stc/SA8075SW): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER). Razorback Fabrics Inc
- [STC SA1008WE](https://openairdocs.org/stc/SA1008WE): Installation of Poly-Fiber covering material. Poly-Fiber Inc
- [STC SA614SO](https://openairdocs.org/stc/SA614SO): Installation of nose wheel shimmy damper. Gander Aircraft Corp
- [STC SA635SO](https://openairdocs.org/stc/SA635SO): Reduction of maximum certificated takeoff weight from 12,750 to 12,500 pounds. Franklin Dean H
- [STC ST01698AT](https://openairdocs.org/stc/ST01698AT): Installation of a Collins 'Safety Package' (TCAS II, Mode S transponder, and turbulence/weather radar). East Coast Avionics, Inc
- [STC ST00982AT-D](https://openairdocs.org/stc/ST00982AT-D): Installation and operation of a Bendix/King CAS 66 A TCAS I System installed. Pan Am (Air Bridge)
- [STC ST01559AT](https://openairdocs.org/stc/ST01559AT): Installation of an AlliedSignal MK-VI Ground Proximity Warning System (GPWS). Pan Am (Air Bridge)
- [STC SA1-546](https://openairdocs.org/stc/SA1-546): Install B.F. Goodrich type 21 pump type pneumatic de-icer system. B.F. Goodrich
- [STC ST00474AT-D](https://openairdocs.org/stc/ST00474AT-D): Installation and operation of an Airtell Centaurus 3 ground proximity warning system. Chalk's International Airlines, Inc
- [STC SA00165AT](https://openairdocs.org/stc/SA00165AT): Installation of 13 passenger interior arrangement. Hill Air Company
- [STC SA3323SO](https://openairdocs.org/stc/SA3323SO): Deactivation of windshield wiper and landing light systems. Jetaire Services, Inc
- [STC SA3234SO](https://openairdocs.org/stc/SA3234SO): Installation of Lexan replacement windshield and cockpit window. (G-73 S/N J-27, J-36, J-42, J-44, J-30). Jetaire Services, Inc
- [STC SA3288SO](https://openairdocs.org/stc/SA3288SO): Installation of 13 passenger seat interior modification. Banyan Air Services, Inc
- [STC SA2323WE](https://openairdocs.org/stc/SA2323WE): Increase in gross weight and installation of United Aircraft of Canada, Ltd., PT6A-27 or PT6A-34, or PT6A-34AG engines. Frakes Aviation, Inc
- [STC SA3131SO](https://openairdocs.org/stc/SA3131SO): Installation of a Fairchild cockpit voice recorder. Chalk's International Airlines, Inc
- [STC SA3007SO](https://openairdocs.org/stc/SA3007SO): Installation of a pulsed landing light system. Chalk's International Airlines, Inc
- [STC SA4-1554](https://openairdocs.org/stc/SA4-1554): Structure modification to improve access to fuel tanks for stripping and resealing. Rogerson ATS
- [STC SA7417SW](https://openairdocs.org/stc/SA7417SW): Installation of Century Flight Systems Model AK976 automatic flight system consisting of Century 2000 autopilot with1C753-205 yaw damper system. Century Flight Systems Inc
- [STC SA2208SO](https://openairdocs.org/stc/SA2208SO): Fabrication and installation of landing gear indicator proximity switches. Chalk's International Airlines, Inc
- [STC SA4410SW](https://openairdocs.org/stc/SA4410SW): Installation of 17 passenger configuration, seats, emergency exit, and floor modification. Frakes Aviation, Inc
- [STC SA5845SW](https://openairdocs.org/stc/SA5845SW): Avionics Installation. Frakes Aviation, Inc
- [STC SA1351WE](https://openairdocs.org/stc/SA1351WE): Replace existing fabric on wings, fuselage, empennage, and/or control surfaces, with Ceconite101 material. (262A Series -12). Ceconite Inc
- [STC SA412GL](https://openairdocs.org/stc/SA412GL): Installation of Parker Hannifin conversion kit P/N 199-81. Parker Hannifin Corp
- [STC SA4555SW](https://openairdocs.org/stc/SA4555SW): Removal of cabin windows and installation of new double paned windows. Frakes Aviation, Inc
- [STC SA36NE](https://openairdocs.org/stc/SA36NE): Install Edison continuous loop fire detection system. Armtec Industries, Inc
- [STC SA310EA](https://openairdocs.org/stc/SA310EA): Fabrication of new passenger seats and necessary cabin interior modifications. Aero Trades Inc
- [STC SA292EA](https://openairdocs.org/stc/SA292EA): Pump type pneumatic deicer system. BF Goodrich Airport Operations
- [STC SA3-165](https://openairdocs.org/stc/SA3-165): Two 100-ampere Eclipse 30E16-1 generators. General Motors
- [STC SA3-194](https://openairdocs.org/stc/SA3-194): Sonotone sintered-plate Alkaline Nickel-Cadmium battery. Sherwood George W
- [STC SA3-22](https://openairdocs.org/stc/SA3-22): Hull step fairing. Briggs Manufacturing Company
- [STC SA1-490](https://openairdocs.org/stc/SA1-490): Opening in leading edge of right- hand wing for passing light installation. Aero Trades, Inc

## Related

- Other Grumman G-73 aircraft: https://openairdocs.org/model/grumman-g-73/aircraft.md
- The Pratt & Whitney R1340 series engine: https://openairdocs.org/engine/pratt-whitney-r1340-series.md

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