- Date
- October 3, 1972
- Place
- Hayden, CO · HAYDEN, CO
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N1397XBell 47G3B1
- Status
- Completed · report March 24, 1973
- Report
- Brief approved by the director
- Case key
- 168821
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 ---------------------------------------------------------------------------------------------------------------------------- 3-3521 72/10/3 NR.HAYDEN,COLO BELL 47G3B1 CR- 0 0 1 COMMERCIAL COMMERCIAL, AGE 34, 6800 TIME - 1610 N1397X PX- 0 0 1 AIR TAXI-PASSG TOTAL HOURS, 3500 IN DAMAGE-SUBSTANTIAL OT- 0 0 0 TYPE, NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION CRAIG,COLO RETURN TYPE OF ACCIDENT PHASE OF OPERATION PROPELLER/ROTOR FAILURE: MAIN ROTOR IN FLIGHT: NORMAL CRUISE AIRFRAME FAILURE: IN FLIGHT IN FLIGHT: UNCONTROLLED DESCENT PROBABLE CAUSE(S) ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: MAIN ROTOR DRIVE SHAFT MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND REMARKS- COUNTING ELK.M/R MAST THRUST BEARING FAILED FOR UNDET REASON.MAST AND M/R SEPARATED BFOR IMPACT.
Aircraft
- Registration
- N1397X
- Reported as
- Bell 47G3B1
- 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.
Other investigations on N1397X · 4
Matched to the same aircraft by N-number and date.
NTSB MIA96LA235Accident · No injuriesLimited investigationFinal reportBorinquen, PRthe pilot failed to maintain control of the aircraft while hover taxing. Factors in this accident were wind gusts and a tailwind.NTSB MIA91LA217Accident · No injuriesLimited investigationFinal reportPenuelas, PRInadvertent control interference by a passenger shortly after takeoff resulting in the loss of control and roll over after touchdown.NTSB LAX83LA184Accident · Minor injuriesLimited investigationFinal reportDelano, CAThe acft collided with a power line and trees while applying pesticide to an orchard. The pilot was flying into the rising sun and failed to see the power line which serviced an agricultural deep well.NTSB DEN68A0020Accident · Minor injuriesClosedSilverthorne, CO