SEA87LA010

NTSB accident investigation · Britten-Norman BN-2A-20 · Lower Loon, ID · October 10, 1986

Accident · No injuriesLimited investigationFinal report
Date
October 10, 1986, 12:00 local (18:00 UTC)
Place
Lower Loon, ID
Injuries
6 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N25SABritten-Norman BN-2A-20
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19861010048649A
Case key
40555

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.

Main gear collapsedLanding - roll
Terrain condition - wetFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Weather condition - tailwindFactor
Proper alignment - not maintainedPilot in commandCause
Wrong runway - selectedPilot in commandCause
Airport facilities,runway/landing area condition - inadequate
Dragged wing,rotor,pod,float or tail/skidLanding - roll

Analysis

The plt diverted from his original destination due to weather. Upon landing at the alternate airport wiht a 7 knot tail wind, while using heavy braking on wet sod, the brakes locked. The acft veered to the right of the center placing the right main gear on rough terrain where it collapsed, dragging the right wing. The airstrip is only 1100 feet long.

Aircraft

Registration
N25SA
Reported as
Britten-Norman BN-2A-20
Category
Airplane
Serial number
766
Airframe hours
4,920
Engine
Lycoming IO540K1B5, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Mountain Bird, Inc., doing business as Salmon Air Taxi
Registered owner
Mountain Bird, Inc.
Airworthiness certificate
Standard, Normal
Departed
SMN · Salmon, ID
Destination
U54 · Bernard Creek, ID
Flight plan
Company VFR
Airport
Lower Loon

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
38
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,825 total · 800 in this make and model · 5,600 as pilot in command · 330 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 5 knots, gusting 8
Visibility
25 statute miles
Lowest ceiling
None
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.