# NTSB OAK77FVM14: Fairchild FH1100, N390P, San Francisco, CA, May 24, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 24, 1977
- Place: San Francisco, CA · SAN FRANCISCO, CA
- Location: 37.7750° N, 122.4194° W: Placed by OpenAirDocs: center of San Francisco, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7750&lon=-122.4194&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 22, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 157232
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK77FVM14
- Page: https://openairdocs.org/ntsb/OAK77FVM14

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1255  77/5/24    SAN FRANCISCO,CA    FAIRCHILD FH1100    CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 0830                    N390P               PX-  0  0  0  CONSTRUCTION              32, 5615 TOTAL HOURS, 105
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CONCORD,CA                  SAN FRANCISCO,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: ELECTRONIC TOWERS                         IN FLIGHT: HOVERING
        PROBABLE CAUSE(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: GROUND SIGNALMAN
           MISCELLANEOUS ACTS,CONDITIONS - INSTRUCTIONS-MISINTERPRETED
        REMARKS- PREPARING TO SLING-LIFT ANTENNA MAST.PROPER SIGNAL NOT GIVEN.
```

## Aircraft

- Registration: [N390P](https://openairdocs.org/deregistered/N390P-1978-07-06), registration cancelled 1978-07-06, S/N 123, built 1968 (OpenAirDocs)
- Reported make and model: FAIRCHILD FH1100
- Registry model: [Fairchild Hiller FH-1100](https://openairdocs.org/model/fairchild-hiller-fh-1100) (registry code 3376502) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage

## 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 19770524013899A](https://openairdocs.org/incident/19770524013899A), May 24, 1977: Frchld FH1100, San Francisco, CA, Substantial damage. Preparing to sling-lift antenna mast. Proper signal not given.

## Other investigations on N390P (1)

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.

- [NTSB DEN70AD044](https://openairdocs.org/ntsb/DEN70AD044), Jan 8, 1970: Hiller Acft FH1100 (N390P), Blanca, CO, substantial 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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