CHI92LA017

NTSB accident investigation · Mcdonnell Douglas MD369D · Beech Grove, IN · October 23, 1991

Accident · No injuriesLimited investigationFinal report
Date
October 23, 1991, 11:00 local (16:00 UTC)
Place
Beech Grove, IN
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N88SEMcdonnell Douglas MD369D
Weather
Visual (VMC) · Day
Status
Completed · report December 4, 1992
Report
Approved by Office Director
FAA report
19911023047419A
Case key
15341

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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Probable cause

Improper installation of the flight control linkage during maintenance. Complacency and inadequate inspection of the helicopter by maintenance personnel and the pilot are factors in the accident.

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/malfunctionTaxi - aerial
Rotorcraft flight control,cyclic bellcrank - disconnected
Maintenance,installation - improperOther maintenance personnelCause
ComplacencyOther maintenance personnelFactor
Maintenance,inspection - improperOther maintenance personnelFactor
Aircraft preflight - improperPilot in commandFactor
ComplacencyPilot in commandFactor
Roll overTaxi - aerial
Aircraft control - not possiblePilot in command

Analysis

The accident helicopter experienced a loss of cyclic pitch control during liftoff to a hover at the start of a business flight. The helicopter pitched up, striking the tail rotor into the ground and then rolled onto its right side. The helicopter sustained substantial damage. The commercial pilot and two passengers were not injured. On scene inspection of the wreckage showed a flight control linkage disconnect. The missing bolt was found on the ground next to the helicopter. The other connecting hardware was not found. The pilot stated that he did not notice the missing nut during his preflight inspection.

Aircraft

Registration
N88SE
Reported as
Mcdonnell Douglas MD369D
Category
Helicopter
Serial number
775D
Airframe hours
1,236
Engine
Allison 250-C20B, 375 horsepower, turbo shaft
Damage
Substantial damage
Flight
Business · Part 91
Operator
Miami Valley Services
Registered owner
Miami Valley Services
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · September 26, 1991 · 24 hours before
Destination
NONE · Richmond, IN

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
54
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
3,000 total · 400 in this make and model · 2,800 as pilot in command · 100 in the last 90 days · 25 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 11 knots
Visibility
4 statute miles
Lowest ceiling
1,100 ft overcast
Temperature
66 °F, dew point 63 °F
Altimeter
30.00 inHg
Observed at
IND, 10 nm away

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 N88SE · 1

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