# N425LS: Gulfstream-Schweizer A/C GULFSTREAM AM G-164B

- Status: Valid registration
- Airframe: [Gulfstream-Schweizer A/C GULFSTREAM AM G-164B](https://openairdocs.org/model/gulfstream-schweizer-a-c-gulfstream-am-g-164b) (registry code 3979904, 1 seats)
- Data sheets: [TCDS 1A16](https://openairdocs.org/tcds/1A16) (Allied Ag Cat Productions Inc.) (OpenAirDocs)
- Serial number: 598B
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: December 5, 1979
- Certificate issued: June 28, 2021
- Expires: June 30, 2028
- Mode S code: A50F3D
- Registered owner: [Red Willow Rescue Inc](https://openairdocs.org/faa-owner/RED%20WILLOW%20RESCUE%20INC)
- Location: [Cooperstown, ND](https://openairdocs.org/faa-place/ND/Cooperstown)
- Owner type: Corporation
- Owner's area on the map: 47.4537° N, 98.1183° W: Placed by OpenAirDocs at the center of ZIP code 58425, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=425LS
- Page: https://openairdocs.org/aircraft/N425LS

From the FAA registry file of October 21, 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.

## ADs that may apply (OpenAirDocs): 18 in force

### Matched by airframe (Gulfstream-Schweizer A/C GULFSTREAM AM G-164B)

- [AD 2023-08-07](https://openairdocs.org/ad/2023-08-07): Propeller Controlling System · Allied Ag Cat Productions G-164A and G-164B with STC SA7546SW or 4 others. Effective Jun 21, 2023
- [AD 2011-05-07](https://openairdocs.org/ad/2011-05-07): Stabilizers · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Mar 17, 2011
- [AD 2007-17-02](https://openairdocs.org/ad/2007-17-02): Fuel shut-off valve control · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Sep 18, 2007
- [AD 89-18-02 R1](https://openairdocs.org/ad/89-18-02-R1): Elevator Push-Pull Rods · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Nov 24, 1989
- [AD 82-13-06](https://openairdocs.org/ad/82-13-06): Aileron Bellcrank Inspection · Allied Ag Cat Productions G-164B, G-164B-15T, G-164B-20T and 5 more. Effective Jul 5, 1982
- [AD 73-19-10](https://openairdocs.org/ad/73-19-10): Elevator Control Horn · Allied Ag Cat Productions G-164A, G-164B, G-164B-15T and 3 more. Effective Aug 29, 1979
- [AD 78-23-11](https://openairdocs.org/ad/78-23-11): Aileron Balance Cables · Allied Ag Cat Productions G-164, G-164A, G-164B and 5 more. Effective Feb 28, 1979
- [AD 78-26-03](https://openairdocs.org/ad/78-26-03): Wing Fittings Corrosion Detection · Allied Ag Cat Productions G-164, G-164A, G-164B and 4 more. Effective Dec 20, 1978
- [AD 77-19-05](https://openairdocs.org/ad/77-19-05): Flying Wire Terminals · Allied Ag Cat Productions G-164A, G-164B, G-164B-15T and 3 more. Effective Sep 22, 1977
- [AD 75-14-04](https://openairdocs.org/ad/75-14-04): Rudder Cables · Allied Ag Cat Productions G-164, G-164A, G-164B and 4 more. Effective Jul 7, 1977
- [AD 77-13-04](https://openairdocs.org/ad/77-13-04): Placard-Brake Warning · Allied Ag Cat Productions G-164A, G-164B, G-164B-15T and 3 more. Effective Jun 29, 1977
- [AD 76-21-03](https://openairdocs.org/ad/76-21-03): Main Landing Gear Struts · Modified landing gear (Frenco STC SA647WE). Effective Oct 20, 1976
- [AD 67-29-04](https://openairdocs.org/ad/67-29-04): Elevator Forward Pushrod · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Oct 27, 1967
- [AD 66-01-02](https://openairdocs.org/ad/66-01-02): Propeller Cone and Spacer Sets · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Dec 28, 1965
- [AD 63-22-02](https://openairdocs.org/ad/63-22-02): Throttle Control Pivot Bolt · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Oct 26, 1963
- [AD 63-22-01](https://openairdocs.org/ad/63-22-01): Spray Pump Fan Blades · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Oct 25, 1963
- [AD 63-01-01](https://openairdocs.org/ad/63-01-01): Engine Mount Washers · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Jan 5, 1963
- [AD 62-08-07](https://openairdocs.org/ad/62-08-07): Aileron Control Cable Modification · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Apr 25, 1962

### Historical (superseded or no longer in force)

- [AD 2008-22-21](https://openairdocs.org/ad/2008-22-21) (historical): Main tubular spar · Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Dec 19, 2008
- [AD 82-07-04](https://openairdocs.org/ad/82-07-04) (historical): Fuel Shutoff Valve Modification · Allied Ag Cat Productions G-164A, G-164B, G-164B-15T and 6 more. Effective Apr 6, 1982
- [AD 78-08-09](https://openairdocs.org/ad/78-08-09) (historical): Rudder Assembly · Allied Ag Cat Productions G-164, G-164A, G-164B and 4 more. Effective Apr 21, 1978

## Information bulletins (advisory) (2 in force)

- [SAIB CE-16-02](https://openairdocs.org/saib/CE-16-02): Engine Mounts: Allied Ag Cat Airplanes with Honeywell TPE331 Conversions; engine mount cracking and recommended visual mount inspections.. Issued Oct 7, 2015
- [SAIB CE-11-40](https://openairdocs.org/saib/CE-11-40): Flight Controls: Rudder. Issued Jun 10, 2011

## NTSB investigations (2)

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

- [NTSB ERA14LA368](https://openairdocs.org/ntsb/ERA14LA368), Jul 25, 2014: Gulfstream-Schweizer A/C G-164B (N425LS), Bonifay, FL, substantial damage. Probable cause: A partial blockage of the No. 2 bearing oil nozzle jet by bearing material, which resulted in oil starvation and the subsequent failure of the No. 2 bearing and total loss of engine power.
- [NTSB DFW08CA235](https://openairdocs.org/ntsb/DFW08CA235), Sep 18, 2008: Gulfstream-Schweizer A/C Gulfstream (N425LS), Patterson, LA, substantial damage. Probable cause: The loss of engine power due to fuel contamination. Contributing to the accident was the unsuitable muddy terrain for the forced landing.

## 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; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20140725014909A](https://openairdocs.org/incident/20140725014909A), Jul 25, 2014: Gulfstream-Schweizer A/C Corp GULFSTREAM AM G-164B (N425LS), Bonifay, FL, Substantial damage. Pilot stated that the power surged, then engine went to idle with no response to power lever movement. Airplane was landed off airport in heavy timber land 1…
- [Accident 20080918848079A](https://openairdocs.org/incident/20080918848079A), Sep 18, 2008: Scwzer G164B (N425LS), Patterson, LA, Substantial damage. (-23) Pilot was in cruise flight, engine sputtered, and quit, pilot landed aircraft in field se of Patterson airport, after landing the aircraft, the aircraft…

## Service difficulty reports

None filed for this aircraft.

## Related

- Other Gulfstream-Schweizer A/C GULFSTREAM AM G-164B aircraft: https://openairdocs.org/model/gulfstream-schweizer-a-c-gulfstream-am-g-164b/aircraft.md
- STCs for the Gulfstream-Schweizer A/C GULFSTREAM AM G-164B: https://openairdocs.org/model/gulfstream-schweizer-a-c-gulfstream-am-g-164b/stcs.md

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