ANC83LA035

NTSB accident investigation · Bell 47G-2 · Anchorage, AK · January 19, 1983

Accident · Minor injuriesLimited investigationFinal report
Date
January 19, 1983, 13:00 local (17:00 UTC)
Place
Anchorage, AK
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2822BBell 47G-2
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19830119001209A
Case key
4095

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.

Hard landingLanding - flare/touchdown
In-flight planning/decision - improperPilot in command(cfi)Cause
Weather condition - high density altitudeFactor
Weather condition - tailwindFactor
Weather evaluation - inadequatePilot in command(cfi)Cause
Proper descent rate - not possibleDual studentFactor
Remedial action - delayedPilot in command(cfi)Cause
Terrain condition - mountainous/hillyFactor
Terrain condition - snow coveredFactor

Analysis

The helicopter made a landing during which the tail boom was severed. This was a dual instructional flight and accordingto the instructor, a high reconnaissance was performed before selecting their approach to the pinnacle. The pinnacle is a 3000 foot landing area unobstructed for 360 degrees around the pinnacle and is widely used by helicopter operators forpinnacle practice. The instructor stated that he normally would not do pinnacle work with a full load of fuel. Because the student was ready for a checkride, except for the pinnacle work, the ip elected to do it immediately. He selected anapproach to the west because he said he saw no blowing snow. At 20 feet AGL he noted high sink rate and he added power as he took control, but the helicopter continued to settle with power. The acft hit hard in a level attitude and the tailboom was severed. Investigation immediately after the accident showed blowing snow which indicated a wind from the east.

Aircraft

Registration
N2822B
Reported as
Bell 47G-2
Category
Helicopter
Serial number
1470
Airframe hours
6,832
Engine
Lycoming VO-435, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Wilburs Flight Operations
Registered owner
Wilburs Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · September 30, 1982 · 87 hours before
Departed
MRI · Anchorage, AK
Airport
MRI · Merrill Field

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
29
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
691 total · 45 in this make and model · 45 in the last 90 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 3 knots
Visibility
40 statute miles
Lowest ceiling
18,000 ft broken
Temperature
27 °F, dew point 21 °F
Altimeter
29.00 inHg
Observed at
MRI, 12 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 N2822B · 2

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