ATL87LA222

NTSB accident investigation · Bell 47G-2 · Huntsville, AL · July 23, 1987

Accident · Minor injuriesLimited investigationFinal report
Date
July 23, 1987, 17:35 local (22:35 UTC)
Place
Huntsville, AL
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N972BBell 47G-2
Weather
Visual (VMC) · Day
Status
Completed · report April 24, 1989
Report
Approved by Office Director
FAA report
19870723037559A
Case key
7492

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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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.

In flight collision with terrain/waterManeuvering - turn to reverse direction
Terrain condition - water
Low pass - performedPilot in commandCause
Ostentatious displayPilot in commandFactor
Descent - inadvertentPilot in commandCause
Clearance - misjudgedPilot in commandCause

Analysis

The helicopter impacted the water during a low-altitude turn over a river. The plt made a low pass to the south over an island at about 30 ft AGL, to show the island to the policewoman/traffic observer onboard. As he was making a climbing right turn at about 40 KTS IAS to pass back over the island, the acft rolled excessively in the direction of turn and the nose began to 'tuck'. He attempted to correct the situation by applying opposite cyclic only. He did not increase the pwr or add collective pitch. He did not remember if he used any left pedal to assist in counteracting the excessive turning. The acft impacted the water in a slight, right bank attitude, with the nose low. The plt reported that the engine and main rotor rpm's remained 'in the green' during the maneuver.

Aircraft

Registration
N972B
Reported as
Bell 47G-2
Category
Helicopter
Serial number
1320
Airframe hours
4,591
Engine
Lycoming VO-435, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial observation · Part 91
Operator
John L. Lanier, doing business as Valley Flying Service
Registered owner
Logan J. Lanier
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · February 6, 1987 · 56 hours before

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
38
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,600 total · 800 in this make and model · 200 in the last 90 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 7 knots
Visibility
15 statute miles
Lowest ceiling
25,000 ft overcast
Temperature
82 °F, dew point 72 °F
Altimeter
30.00 inHg
Observed at
HSV, 3 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 N972B · 4

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