SEA91FA075

NTSB accident investigation · Robinson R-22 Beta · Seattle, WA · March 31, 1991

Accident · FatalField investigationFinal report
Date
March 31, 1991, 15:02 local (23:02 UTC)
Place
Seattle, WA
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Approach
Aircraft
N2631VRobinson R-22 Beta
Weather
Visual (VMC) · Day
Status
Completed · report February 8, 1993
Report
Approved by Office Director
FAA report
19910331007869A
Case key
41311

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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Probable cause

The loss of control in flight by the pilot due to his improper preflight preparation in failing to secure cargo which shifted in flight and interfered with the movement of the cyclic control stick.

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 flightApproach - vfr pattern - final approach
Cargo/baggage - looseCause
Preflight planning/preparation - improperPilot in commandCause
Cargo/baggageCause
Control interference - encounteredPilot in commandCause
In flight collision with objectDescent - uncontrolled

Analysis

The acft was on VFR final appr at 100 ft AGL when it rolled over, descended uncontrolled, and impacted the roof of a whse. The impact broke a skylight in the roof and the acft fell through the hole, coming to rest inside the whse. Rocks, hand tools, and a large unsecured tree stump were in the acft cabin. The stump had a fresh scar and black paint smears adjacent to the cyclic control stick. A screw head in the black cyclic stick was filled with wood splinters.

Aircraft

Registration
N2631V
Reported as
Robinson R-22 Beta
Category
Helicopter
Serial number
0776
Engine
Lycoming O-320-B2C, 160 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Operator
Classic Helicopter Corp.
Registered owner
Classic Helicopter Corp.
Airworthiness certificate
Standard, Normal
Departed
NONE · Snoqualmie, WA
Destination
BFI · Seattle, WA
Airport
BFI · Boeing 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
37
Certificates
Flight instructor, Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Toxicology
Performed
Flight hours
9,743 total · 7,661 in this make and model · 9,424 as pilot in command · 211 in the last 90 days · 66 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 7 knots
Visibility
20 statute miles
Lowest ceiling
10,000 ft broken
Temperature
61 °F, dew point 46 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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