- Date
- July 22, 1967
- Place
- Leadville, CO · LEADVILLE, CO
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N1334XBell 47G3B1
- Status
- Completed · report September 25, 1967
- Report
- Brief approved by the director
- Case key
- 115823
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 ---------------------------------------------------------------------------------------------------------------------------- 2-0424 67/7/22 LEADVILLE,COLO BELL 47G3B1 CR- 0 0 1 COMMERCIAL COMMERCIAL, FL.INSTR., TIME - 0600 N1334X PX- 0 0 0 CONSTRUCTION AGE 41, 3937 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 180 IN TYPE, NOT INSTRUMENT RATED. TYPE OF ACCIDENT PHASE OF OPERATION ENGINE FAILURE OR MALFUNCTION IN FLIGHT: HOVERING HARD LANDING LANDING: POWER-OFF AUTOROTATIVE LANDING PROBABLE CAUSE(S) POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND REMARKS- NO.2 CYL EXH VALVE FAILED.LYCOMING SERVICE BULLETIN 314 DTD JUN 23, 67 NOT COMPLIED WITH.
Aircraft
- Registration
- N1334X
- Reported as
- Bell 47G3B1
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
N1334XRegistration cancelled Mar 19, 2003 · Bell 47G-3B-1Airframe modelBell 47G-3B-1Engine modelLycoming TVO-435-GIA
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.
Other investigations on N1334X · 2
Matched to the same aircraft by N-number and date.
NTSB ATL84FA001Accident · 1 fatalField investigationFinal reportPliny, WVThe helicopter was being used in the construction of elect transmission lines. A 150-FT longline cable had been utilizedon an earlier flight for lifting external loads. However, there was no reason for the longline to be attached on the accident flight as the…NTSB DEN83LA154Accident · No injuriesLimited investigationFinal reportTownsend, MTThe helicopter made a hard touchdown during an autorotative forced landing after the engine quit. During the landing themain rotor severed the tail boom. The pilot stretched the autorotational glide to reach a hay field and lost main rotor RPM in the process.…