Sikorsky S55 N873Z accident, Holopaw, FL, Jun 5, 1964 · NTSB UNK64X2139

Date: June 5, 1964
Place: Holopaw, FL · HOLOPAW, FL
Injuries: 1 uninjured
Damage: Substantial damage
Phase of flight: Takeoff
Aircraft: N873ZSikorsky S55
Status: Completed · report November 20, 1964
Report: Brief approved by the director
Case key: 183684

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

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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
----------------------------------------------------------------------------------------------------------------------------
2-0540   64/6/5  NR.HOLOPAW FLORIDA    SIKORSKY S55        CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 28, 2100
        TIME - 1115                    N873Z               PX-  0  0  0  CONSTRUCTION              TOTAL HOURS, 1000 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: VERTICAL
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- CLUTCH FREE WHEEL UNIT ROLLERS P/N S-14-35-2523 HAD FLAT AND BADLY ABRADED AREAS

Aircraft

Registration: N873Z
Reported as: Sikorsky S55
Category: Helicopter
Engine: reciprocating
Damage: Substantial damage

N873ZRegistration cancelled May 21, 2018 · Sikorsky S-55BS/N 55372 · Built 1953 Airframe modelSikorsky S-55B Engine modelWright C7BA seriesReciprocating

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.