# NTSB LAX78FUA16: Boeing PT-13, N9722Z, Irvine, CA, May 19, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 19, 1978
- Place: Irvine, CA · IRVINE, CA
- Location: 33.6695° N, 117.8231° W: Placed by OpenAirDocs: center of Irvine, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.6695&lon=-117.8231&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 8, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 141520
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX78FUA16
- Page: https://openairdocs.org/ntsb/LAX78FUA16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2088  78/5/19    IRVINE,CA           BOEING PT-13        CR-  0  0  1  NONCOMMERCIAL             AIRLINE TRANSPORT, AGE
        TIME - 1645                    N9722Z              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  47, 8967 TOTAL HOURS, 106
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - ORANGE COUNTY
        DEPARTURE POINT             INTENDED DESTINATION
          ELSINORE,CA                 SANTA ANA,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: DESCENDING
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: CYLINDER ASSEMBLY
           POWERPLANT - FUEL SYSTEM: LINES AND FITTINGS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           TERRAIN - ROUGH/UNEVEN
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FORCED LDG ON VERY ROUGH,HARD SOD.#5 HEAD CYL CRACKED.MAIN FUEL LINE BROKEN OFF AT CARB.
```

## Aircraft

- Registration: [N9722Z](https://openairdocs.org/aircraft/N9722Z), registered now, S/N 75-5491, built 1944 (OpenAirDocs)
- Reported make and model: BOEING PT-13
- Registry model: [Boeing E75](https://openairdocs.org/model/boeing-e75) (registry code 1380120) (OpenAirDocs)
- Registry engine: [Lycoming R680](https://openairdocs.org/engine/lycoming-r680) (registry code 41540, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Orange County

## 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 19780519022799A](https://openairdocs.org/incident/19780519022799A), May 19, 1978: Boeing E75, Irvine, CA, Substantial damage. Forced ldg on very rough,hard sod.#5 head cyl cracked. Main fuel lbroken off at carb.

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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