# NTSB LAX72FUM04: Piper PA-22, N972A, Alpine, CA, July 25, 1971

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 25, 1971
- Place: Alpine, CA · ALPINE, CA
- Location: 32.8428° N, 116.7554° W: Placed by OpenAirDocs: center of Alpine, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.8428&lon=-116.7554&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report August 29, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 163653
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX72FUM04
- Page: https://openairdocs.org/ntsb/LAX72FUM04

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4518  71/7/25    ALPINE,CALIF        PIPER PA-22         CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 47, 154
        TIME - 1430                    N972A               PX-  0  1  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 93 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - TULE SPRNGS STRIP
        DEPARTURE POINT             INTENDED DESTINATION
          SANTEE,CALIF                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: OTHER
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- EXH VALVE HEAD SEPD FRM STEM.HOLES IN TOP OF PISTON,NR3 CNCTG ROD TWISTED.CIRCLING STRIP.HIT RUT.
```

## Aircraft

- Registration: [N972A](https://openairdocs.org/deregistered/N972A-1971-12-17), registration cancelled 1971-12-17, S/N 22-286, built 1951 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22](https://openairdocs.org/model/piper-pa-22) (registry code 7102202) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Tule Sprngs Strip

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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