NYC80FFJ10

NTSB accident investigation · Hiller Acft UH-12E · N Cohocton, NY · June 29, 1980

Accident · Minor injuriesClosed
Date
June 29, 1980
Place
N Cohocton, NY · N COHOCTON, NY
Injuries
1 minor, 2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N705WAHiller Acft UH-12E
Status
Completed · report September 23, 1980
Report
Brief approved by the director
FAA report
19800629037209A
Case key
129544

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

NTSB brief

NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.

----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2019  80/6/29    N COHOCTON,NY       HILLER ACFT UH-12E  CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 38, 950
        TIME - 1635                    N705WA              PX-  0  0  2  SEARCH AND RESCUE         TOTAL HOURS, UNK/NR IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          N COHOCTON,NY               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: OTHER
           ROLL OVER                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- 14HRS SMOH.NO 3 ROD BORED .010 OVERSIZE,INSTALLED ON CRANKSHAFT W STANDARD SIZE BEARING.

Aircraft

Registration
N705WA
Reported as
Hiller Acft UH-12E
Category
Helicopter
Engine
reciprocating
Damage
Substantial damage

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.