- Date
- April 15, 2013, 14:45 local (22:45 UTC)
- Place
- Port Alsworth, AK
- Injuries
- 4 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N1820LBeech A36
- Defining event
- Landing-landing roll: Landing gear collapse
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 13, 2013
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- Parties
- FAA Anchorage FSDO
- FAA report
- 20130415006289A
- Case key
- 86724
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 failure of the left main landing gear retraction brace assembly, resulting in the collapse of the left main landing gear.
Findings · 1
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot was landing the airplane on a dry, unpaved airstrip, when the left main landing gear retraction brace assembly (PN 35-815125-2) broke, and the left main landing gear collapsed. The airplane sustained substantial damage to the left aileron. The pilot stated that there were no preaccident mechanical anomalies with the airplane. Examination of the airplane's maintenance logbooks revealed no record that the brace assembly had ever been replaced during the airframe's time in service of 19,770 hours. The brace is a on-condition replacement part.
Factual narrative
The pilot was landing the airplane on a dry, unpaved airstrip, when the left main landing gear retraction brace assembly (PN 35-815125-2) broke, and the left main landing gear collapsed. The airplane sustained substantial damage to the left aileron. The pilot stated that there were no preaccident mechanical anomalies with the airplane. Examination of the airplane's maintenance logbooks revealed no record that the brace assembly had ever been replaced during the airframe's time in service of 19,770 hours. The brace is a on-condition replacement part.
Aircraft
- Registration
- N1820L
- Reported as
- Beech A36
- Category
- Airplane
- Serial number
- E-843
- Airframe hours
- 19,770
- Engine
- Cont Motor IO 520 SERIES, 285 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Part 135
- Operator
- Lake Clark Air, INC
- Registered owner
- Alsworth Glen R
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · April 10, 2013 · 20 hours before
- Departed
- PAMR · Anchorage, AK
- Destination
- AK51 · Port Alsworth, AK
- Flight plan
- Company VFR
- Airport
- AK51 · Port Alsworth, runway 05, 4,200 × 100 ft, gravel
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
- 32
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Without waivers/limitations
- Last flight review
- March 15, 2013
- Seat
- Left
- Flight hours
- 2,043 total · 510 in this make and model · 183 in the last 90 days · 101 in the last 30 days · 13 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 60° at 10 knots
- Visibility
- 40 statute miles
- Lowest ceiling
- None
- Temperature
- 36 °F, dew point 30 °F
- Altimeter
- 30.36 inHg
- Observed at
- PALJ, 1 nm away
Docket · 1
The files NTSB released with the investigation on July 24, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 MB in all.
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 N1820L · 3
Matched to the same aircraft by N-number and date.