ATL84LA007

NTSB accident investigation · Hiller UH-12B · Mccullough, AL · October 1, 1983

Accident · No injuriesLimited investigationFinal report
Date
October 1, 1983, 18:00 local (22:00 UTC)
Place
Mccullough, AL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N67699Hiller UH-12B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19831001052949A
Case key
6358

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 engine power(partial) - nonmechanicalManeuvering
Fuel system,carburetor - iceFactor
Powerplant controls - not usedPilot in commandCause
Weather condition - carburetor icing conditionsFactor
Emergency procedure - improperPilot in commandCause
Forced landingLanding - flare/touchdown
Autorotation - improperPilot in commandCause

Analysis

The acft crashed in a cotton field after maneuvering at low alt to check the crop. The pilot said he was at an alt of 4 or 5 ft and forward flt was below transitional lift speed. The rotor RPM began to reduce and also there was a drop in engine RPM. The pilot increased rotor pitch and rotor rpms continued to decay. The acft struck the ground, rocked forward and backward and the rotor cut off the tail boom. The pilot shut down the engine with the mixture lever.

Aircraft

Registration
N67699
Reported as
Hiller UH-12B
Category
Helicopter
Serial number
430
Airframe hours
2,244
Engine
Franklin 6UH33550, 210 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
James Wallace
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 20, 1983 · 43 hours before
Departed
Mccullough

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
46
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
7,630 total · 25 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 4 knots
Visibility
6 statute miles
Temperature
75 °F, dew point 63 °F
Altimeter
30.00 inHg
Observed at
MOB

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 N67699 · 1

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