# N405DF: Grumman S2F-1 (TS-2A), registration cancelled 1998-07-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 14, 1998
- Status when cancelled: Valid registration
- Airframe: [Grumman S2F-1 (TS-2A)](https://openairdocs.org/model/grumman-s2f-1-ts-2a) (registry code 3951102)
- Serial number: 266
- Type of aircraft: Fixed wing multi engine
- Certificate issued: January 4, 1974
- Last registry action: April 24, 1996
- Mode S code: A4BF85
- Owners when cancelled: [Usda Forest Service Fepp](https://openairdocs.org/faa-owner/USDA%20FOREST%20SERVICE%20FEPP), [California Dept Of Forestry & Fire Protection](https://openairdocs.org/faa-owner/CALIFORNIA%20DEPT%20OF%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/N405DF
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=405DF
- Page: https://openairdocs.org/deregistered/N405DF-1998-07-14

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 (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 LAX79FA079](https://openairdocs.org/ntsb/LAX79FA079), Sep 10, 1979: Grumman TS-2A (N405DF), Ramona, CA, substantial damage, 1 fatal

## 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 19790910041131A](https://openairdocs.org/incident/19790910041131A), Sep 10, 1979: Grumav S2F (N405DF), Ramona, CA, Substantial damage. Overtook small airplane on downwind. Small plane made base leg turn in front of him. Not seen until last seconds.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.