SEA94LA042

NTSB accident investigation · Bell 47G3B1 · Mesa, WA · November 15, 1993

Accident · No injuriesLimited investigationFinal report
Date
November 15, 1993, 11:00 local (19:00 UTC)
Place
Mesa, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1181WBell 47G3B1
Weather
Visual (VMC) · Day
Status
Completed · report September 13, 1994
Report
Approved by Office Director
FAA report
19931115046929A
Case key
41862

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

On this page

Probable cause

The pilot's improper flare. Factors include excessive airspeed while approaching the flare.

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.

Hard landingLanding - flare/touchdown
Flare - improperPilot in commandCause
Airspeed - excessivePilot in commandFactor

Analysis

While coming in for a landing near a chemical loading truck, the pilot allowed his airspeed to remain high. During his attempt to land with excessive airspeed, the pilot made an improper flare, resulting in the tail rotor hoop hitting the ground, followed by a hard landing. As a result of the hard landing, the main rotor blades flexed down and cut through the top tail boom tubes.

Factual narrative

On November 15, 1993, at 1100 PST, a Bell BH-47G3B1 helicopter, N1181W, operated by Tri-City Helicopter, Inc., landed hard at Mesa, Washington. There was no flight plan filed for the local aerial application flight, conducted under 14 CFR 137 in visual meteorological conditions, that originated at the accident site about 1030, November 15, 1993. The commercial certificated pilot was not injured in the accident. The aircraft was substantially damaged. There was no fire. The operator reported that the pilot had approached the landing site with excessive airspeed, flared excessively during landing, struck the tail on the ground, and landed hard. This was followed by the main rotor blades flexing down and striking the tail boom.

Aircraft

Registration
N1181W
Reported as
Bell 47G3B1
Category
Helicopter
Serial number
2948
Airframe hours
5,575
Engine
Lycoming TVO-435-B1A, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Hood, Melvyn And Doris
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · May 9, 1993

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
31
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
2,100 total

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 20 knots, gusting 30
Visibility
35 statute miles
Lowest ceiling
12,000 ft broken
Temperature
55 °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 N1181W · 2

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