# N450DF: 1953 Grumman S2F-1 (TS-2A), registration cancelled 2002-02-05

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 5, 2002
- Status when cancelled: Triennial form not returned
- Airframe: [Grumman S2F-1 (TS-2A)](https://openairdocs.org/model/grumman-s2f-1-ts-2a) (registry code 3951102)
- Engine: [Wright R-1820 series](https://openairdocs.org/engine/wright-r-1820-series) (registry code 67020)
- Serial number: 421
- Year built: 1953
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Restricted, forest
- Airworthiness date: August 10, 1978
- Certificate issued: September 13, 1974
- Last registry action: June 15, 1999
- Mode S code: A5726D
- Owners when cancelled: [Usda Forest Service Fepp](https://openairdocs.org/faa-owner/USDA%20FOREST%20SERVICE%20FEPP), [California Dept Forestry & Fire Protection](https://openairdocs.org/faa-owner/CALIFORNIA%20DEPT%20FORESTRY%20%26%20FIRE%20PROTECTION), [Aviation Management](https://openairdocs.org/faa-owner/AVIATION%20MANAGEMENT)
- Location: [Mather, CA](https://openairdocs.org/faa-place/CA/Mather)
- Owner type: Government
- Owner's area on the map: 38.5492° N, 121.2786° W: Placed by OpenAirDocs at the center of ZIP code 95655, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N450DF
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=450DF
- Page: https://openairdocs.org/deregistered/N450DF-2002-02-05

From the FAA registry file of October 28, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Grumman S2F-1 (TS-2A): https://openairdocs.org/model/grumman-s2f-1-ts-2a.md

## 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 LAX01GA291](https://openairdocs.org/ntsb/LAX01GA291), Aug 28, 2001: Grumman TS-2A (N450DF), Hopland, CA, destroyed, 2 fatal. Probable cause: the failure of both pilots to maintain an adequate visual lookout. The failure of the pilot in Tanker 87 to comply with suggested procedures regarding positive radio contact and orbit entry was a…
- [NTSB LAX93T#A05](https://openairdocs.org/ntsb/LAX93T%23A05), Jul 9, 1993: Grumman GS-2F (N450DF), Grass Valley, CA, substantial damage

## 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.

- [Accident 20010827029652A](https://openairdocs.org/incident/20010827029652A), Aug 27, 2001: Grumav TS2A (N450DF), Hopland, CA, Destroyed, 1 fatal. (.19)On August 27, 2001, about 1840 hours pacific daylight time, tanker 87 , a Grumman TS-2A, N450DF, collided with tanker 92, a Grumman TS-2A, N442DF, near…

## Other aircraft with N450DF

- [Registered now](https://openairdocs.org/aircraft/N450DF): Marsh S-2F3AT, S/N 152341, built 2005

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