# NTSB FTW71IF033: British AC 1-11, N1542, Okla.City, OK, December 20, 1970

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: December 20, 1970
- Place: Okla.City, OK · OKLA.CITY, OK
- Location: 35.4676° N, 97.5164° W: Placed by OpenAirDocs: center of Oklahoma City, OK, within about 14 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.4676&lon=-97.5164&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 48 uninjured
- Status: Completed, report July 30, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 159508
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW71IF033
- Page: https://openairdocs.org/ntsb/FTW71IF033

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0079  70/12/20 NR.OKLA.CITY,OKLA     BRITISH AC 1-11     CR-  0  0  4  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1506                    N1542               PX-  0  0 44                            36, 4180 TOTAL HOURS, 198
                                       DAMAGE-NONE         OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        OPERATOR - BRANIFF AIRWAYS,INC.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          CHICAGO,ILL                 DALLAS,TEX                  OKLA.CITY,OKLA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INCAPACITATION
        REMARKS- CAPT LOST CONSCIOUSNESS WHILE IN FLIGHT.CAUSE OFILLNESS HAS NOT BEEN CLEARLY DEFINED.
```

## Aircraft

- Registration: N1542 (not matched to a registry record)
- Reported make and model: BRITISH AC 1-11
- Category: Airplane
- Engines: turbo jet
- Damage: No damage

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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