# NTSB MIA79FA115: Cessna 336, N1709Z, San Juan, PR, August 24, 1979

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 24, 1979
- Place: San Juan, PR · SAN JUAN, PR
- 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
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report December 14, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 134309
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA79FA115
- Page: https://openairdocs.org/ntsb/MIA79FA115

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3135  79/8/24    SAN JUAN,PR         CESSNA 336          CR-  1  0  0  NONCOMMERCIAL             COMMERCIAL, AGE 55, 6000
        TIME - 0731                    N1709Z              PX-  1  0  0  BUSINESS                  TOTAL HOURS, 300 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - ISLA GRANDE
        DEPARTURE POINT             INTENDED DESTINATION
          SAN JUAN,PR                 VIEQUES,PR
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           STALL                                                    LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           POWERPLANT - PROPELLER AND ACCESSORIES: GOVERNORS
           MISCELLANEOUS ACTS,CONDITIONS - MISSING
           MISCELLANEOUS - FOREIGN MATERIAL AFFECTING NORMAL OPERATIONS
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON WATER
        REMARKS- REAR ENG GOV GASKET FILTER SCREEN MISSING,WATER & SLUDGE FOUND IN PROP DOME.
```

## Aircraft

- Registration: [N1709Z](https://openairdocs.org/deregistered/N1709Z-2009-09-17), registration cancelled 2009-09-17, S/N 336-0009, built 1963 (OpenAirDocs)
- Reported make and model: CESSNA 336
- Registry model: [Cessna 336](https://openairdocs.org/model/cessna-336) (registry code 2075602) (OpenAirDocs)
- Registry engine: [Continental IO-360 series](https://openairdocs.org/engine/continental-io-360-series) (registry code 17025, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Isla Grande

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19790824035009A](https://openairdocs.org/incident/19790824035009A), Aug 24, 1979: Cessna 336, San Juan, Puerto Rico, Destroyed, 1 fatal. Pilot reported engine problem after t/off. Stalled acft returning to arpt. Found poorly maintained rear engine.

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.

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