# NTSB ANC70A0012: Hiller Acft FH1100, N421FH, Fairbanks, AK, August 3, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 3, 1969
- Place: Fairbanks, AK · FAIRBANKS, AK
- Location: 64.8378° N, 147.7164° W: Placed by OpenAirDocs: center of Fairbanks, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=64.8378&lon=-147.7164&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report December 22, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 164777
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC70A0012
- Page: https://openairdocs.org/ntsb/ANC70A0012

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2582   69/8/3    FAIRBANKS,ALAS      HILLER ACFT FH1100  CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1715                    N421FH              PX-  0  0  2  AIR TAXI-PASSG            AGE 31, 2833 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            263 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - BLM HELIPORT
        DEPARTURE POINT             INTENDED DESTINATION
         UNKNOWN/NOT REPORTED        UNKNOWN/NOT REPORTED
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            TAKEOFF: VERTICAL
           ROLL OVER                                                TAKEOFF: VERTICAL
        PROBABLE CAUSE(S)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: CYCLIC PITCH CONTROL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - DISCONNECTED
           MISCELLANEOUS ACTS,CONDITIONS - MISSING
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
         FIRE AFTER IMPACT
        REMARKS- FORE/AFT CYCLIC ASSY CAME APART AS PITCH WAS APPLIED.BOLT,NAS-1104-18,NUT,COTTER KEY,MISSING.
```

## Aircraft

- Registration: [N421FH](https://openairdocs.org/deregistered/N421FH-2012-06-12), registration cancelled 2012-06-12, S/N 111, built 1968 (OpenAirDocs)
- Reported make and model: HILLER ACFT FH1100
- Registry model: [Fairchild Hiller FH-1100](https://openairdocs.org/model/fairchild-hiller-fh-1100) (registry code 3376502) (OpenAirDocs)
- Registry engine: [Allison 250 SER 250HP](https://openairdocs.org/engine/allison-250-ser-250hp) (registry code 03002, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: Blm Heliport

## Other investigations on N421FH (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 IAD79FID37](https://openairdocs.org/ntsb/IAD79FID37), Sep 19, 1979: Hiller FH1100 (N421FH), Champlain, VA, 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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