FTW86LA041

NTSB accident investigation · Hughes 369D · New Boston, TX · March 7, 1986

Accident · Minor injuriesLimited investigationFinal report
Date
March 7, 1986, 14:15 local (20:15 UTC)
Place
New Boston, TX
Injuries
1 minor, 3 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N58420Hughes 369D
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860307005849A
Case key
21997

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

On this page

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.

Loss of control - in flightHover
Rotor drive system,tail rotor drive shaft - failure,totalCause
Hard landingLanding - flare/touchdown
Roll overLanding - flare/touchdown

Analysis

The pilot experienced a tail rotor drive shaft flexible coupling failure when he pulled collective pitch to come to a hover before landing. The helicopter entered an uncontrollable right spin. During his haste to get the helicopter on the ground the pilot made a hard touchdown. The spinning helicopter then rolled onto its right side before coming to a stop.

Aircraft

Registration
N58420
Reported as
Hughes 369D
Category
Helicopter
Serial number
880337D
Airframe hours
2,287
Engine
Allison 250-C20B, 420 lbs thrust, turbo shaft
Damage
Substantial damage
Flight
Part 135
Registered owner
Metro Aviation Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · September 19, 1985 · 92 hours before
Departed
Mansfield, TX
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
28
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
536 total · 21 in this make and model · 191 as pilot in command · 44 in the last 90 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
165° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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