# NTSB FTW77FRG63: Piper PA-31, N74906, Austin, TX, August 15, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 15, 1977
- Place: Austin, TX · AUSTIN, TX
- Location: 30.2672° N, 97.7431° W: Placed by OpenAirDocs: center of Austin, TX, within about 10 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=30.2672&lon=-97.7431&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 21, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 146089
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW77FRG63
- Page: https://openairdocs.org/ntsb/FTW77FRG63

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1881  77/8/15    AUSTIN,TX           PIPER PA-31         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 45, 996
        TIME - 1521                    N74906              PX-  0  0  0  BUSINESS                  TOTAL HOURS, 280 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - MUELLER
        DEPARTURE POINT             INTENDED DESTINATION
          AUSTIN,TX                   GALVESTON,TX
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: RUN
           STALL: MUSH                                              TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           POWERPLANT - EXHAUST SYSTEM: EXTERNAL SUPERCHARGER
           MISCELLANEOUS ACTS,CONDITIONS - MISSING
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           PILOT IN COMMAND - PREMATURE LIFT-OFF
           PILOT IN COMMAND - MISUSED OR FAILED TO USE FLAPS
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
         FIRE AFTER IMPACT
        REMARKS- WASTE GATE PIVOT PIN P/N 400460-817 MISSING ON RT SUPERCHARGER. PAST HISTORY OF PWR PROBLEMS.
```

## Aircraft

- Registration: N74906 (not matched to a registry record)
- Reported make and model: PIPER PA-31
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Mueller

## 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 19770815024849A](https://openairdocs.org/incident/19770815024849A), Aug 15, 1977: Piper PA31350, Austin, TX, Substantial damage. Waste gate pivot pin p/n 400460-817 missing on rt supercharger. Past history of pwr problems.

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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