# Accident 19900428012929A: Cessna STC172, San Juan, Puerto Rico, April 28, 1990

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 28, 1990, 10:50 local time
- Place: San Juan, Puerto Rico
- Airport: Isla Grande Airport
- Damage: Destroyed
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- 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: N2670U, a cancelled registration (https://openairdocs.org/deregistered/N2670U-2012-09-19) (OpenAirDocs)
- Registry model: Cessna 172D (registry code 2072410, https://openairdocs.org/model/cessna-172d) (OpenAirDocs)
- Registry engine: Franklin 6V 350 series (registry code 27043, https://openairdocs.org/engine/franklin-6v-350-series) (OpenAirDocs)
- Reported make and model: CESSNA STC172
- Reported engine: FRNKLN 6A350C2
- Fatal injuries: 0
- Pilot flight hours: 243 total, 90 in this make and model, 20 in the last 90 days
- NTSB investigation: [NTSB MIA90LA112](https://openairdocs.org/ntsb/MIA90LA112) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19900428012929A

## Narrative

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

FAILED TO USE FULL CARBURETOR HEAT ON LETDOWN FOR AIRPORT. ENGINE STOPPED. AIRCRAFT DITCHED IN LAGOON AND SANK.

## 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 MIA90LA112](https://openairdocs.org/ntsb/MIA90LA112), Apr 28, 1990: Cessna 172D (N2670U), Isla Grande, PR, substantial damage. Probable cause: IMPROPER USE OF CARBURETOR HEAT BY THE PILOT, WHICH RESULTED IN CARBURETOR ICE. THE WEATHER (CARBURETOR ICING CONDITION) WAS A RELATED FACTOR.

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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