# Accident 19961031045579A: Doug C47, San Juan, Puerto Rico, October 31, 1996

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 31, 1996, 03:30 local time
- Place: San Juan, Puerto Rico
- Airport: Isla Grande Airport
- Damage: Substantial damage
- Phase of flight: Forced/Precautionary Landing
- Operating rules: General operating rules (Part 91)
- Operator: FLMA
- Location: 18.4663° N, 66.1057° W: Placed by OpenAirDocs: center of San Juan, PR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=18.4663&lon=-66.1057&mi=10
- Aircraft: N37AP, a cancelled registration (https://openairdocs.org/deregistered/N37AP-2014-10-02) (OpenAirDocs)
- Registry model: Douglas C-47 (registry code 3021461, https://openairdocs.org/model/douglas-c-47) (OpenAirDocs)
- Registry engine: Pratt & Whitney R-1830 series (registry code 52020, https://openairdocs.org/engine/pratt-whitney-r-1830-series) (OpenAirDocs)
- Reported make and model: DOUG C47
- Reported engine: PWA R183092
- Fatal injuries: 0
- Pilot flight hours: 4,242 total, 1,256 in this make and model
- NTSB investigation: [NTSB ATL97LA012](https://openairdocs.org/ntsb/ATL97LA012) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19961031045579A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON CLIMBOUT RIGHT ENGINE BACKFIRING, ELECTED DIVERT SJU. UNABLE FEATHER. CRASH LANDED. FEATHER INOP. CYL HAD CRACKE

## The NTSB's investigation of this event (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 ATL97LA012](https://openairdocs.org/ntsb/ATL97LA012), Oct 31, 1996: Douglas C-47 (N37AP), Dorado, PR, substantial damage. Probable cause: failure of the #11 cylinder on the right (#2) engine, which resulted in an in-flight fire and loss of power in that engine; and a malfunction/failure of the #2 feathering system, which led to a…

## Other reports on N37AP (2)

Matched to the same aircraft by N-number and date.

- [Incident 19930523026919I](https://openairdocs.org/incident/19930523026919I), May 23, 1993: Doug C47 (N37AP), Christiansted, U.S. Virgin Islands. Hydraulic system failure after takeoff. Returned. No brakes. Pilot veered aircraft onto grass area to stop.
- [Accident 19860323011119A](https://openairdocs.org/incident/19860323011119A), Mar 23, 1986: Doug C47 (N37AP), Steins, NM, Substantial damage. Lost left engine due to a cracked cylinder. Reported right engine lost power reason unverified. Overran dirt strip.

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. For accidents, the NTSB's own investigation is the fuller record.

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