FTW83IA279

NTSB incident investigation · Aerospatiale AS 355 F · High Island 582 · June 12, 1983

Incident · No injuriesIncident investigationFinal report
Date
June 12, 1983, 17:40 local (22:40 UTC)
Place
High Island 582
Injuries
1 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N5796AAerospatiale AS 355 F
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19830612074399I
Case key
20779

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

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionCruise - normal
Rotor drive system,main rotor mast(drive shaft) - fatigueCause
Maintenance,service of aircraft/equipment - improperCompany maintenance personnelFactor
Rotor drive system,main rotor mast(drive shaft) - crackedCause

Analysis

Acft developed a severe vertical vibration and made a precautionary landing. Fatigue cracks were found which originated in a corrosion pit located in an area of chipped paint which had been covered with a coat of primer contrary to aerospatiale service bulletins.

Aircraft

Registration
N5796A
Reported as
Aerospatiale AS 355 F
Category
Helicopter
Serial number
515G
Airframe hours
835
Engine
Allison 250-C20F, 420 horsepower, turbo shaft
Damage
No damage
Flight
Part 135
Registered owner
Retroleum Helicopters, Inc.
Airworthiness certificate
Standard, Utility
Departed
High Island 264, GM
Flight plan
VFR

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.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
41
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
6,133 total · 381 in this make and model · 5,915 as pilot in command · 178 in the last 90 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 10 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 30 °F

FAA reports on this event · 1

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

Other investigations on N5796A · 1

Matched to the same aircraft by N-number and date.