GAA16CA519

NTSB accident investigation · Beech G35 · Kooskia, ID · September 16, 2016

Accident · No injuriesData collectionFinal report
Date
September 16, 2016, 14:00 local (21:00 UTC)
Place
Kooskia, ID
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N168BBeech G35
Defining event
Landing-landing roll: Landing gear not configured
Weather
Visual (VMC) · Day
Status
Completed · report April 10, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20160916018719A
Case key
94110

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 failure to extend the landing gear during landing.

Findings · 4

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.

Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotBeech G35: 3 casesAll aircraft: 1,391 casesProbable cause
Action: forgotten action/omissionPersonnel issues › Action/decision · PilotBeech G35: 3 casesAll aircraft: 440 casesProbable cause
Landing gear system: gear extension and retract sysAircraft › Aircraft systems · Not used/operatedBeech G35: 2 casesAll aircraft: 416 casesProbable cause

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

According to the pilot of the retractable landing gear airplane, his normal approach to the backcountry grass airstrip was to follow the terrain until established on a "5-10 second" final approach. The pilot recalled that there was a 5-knot tailwind at the airstrip during the approach. On final, he increased the flaps, the airspeed was 70 knots, and the airplane touched down on the approach end of the runway. He reported that he did not extend the retractable landing gear and that, following the touchdown, the airplane slid about 1,000 ft down the runway. The airplane sustained substantial damage to the fuselage longerons and the firewall. The pilot reported that there were no mechanical failures or anomalies with the airframe or engine that would have prevented normal operation.

Factual narrative

According to the pilot in the retractable landing gear airplane, his normal approach to the backcountry grass airstrip was to follow the terrain until established on a "5-10 second" final approach. The pilot recalled that there was a five-knot tailwind at the airstrip during the approach. On final, he increased the flaps, the airspeed was 70 knots, and the airplane touched down on the approach end of the runway. However, he reported that he did not extend the retractable landing gear and following the touch down, the airplane slid about 1,000 feet down the runway. The airplane sustained substantial damage to the fuselage longerons and the firewall. The pilot reported that there were no mechanical failures or anomalies with the airframe or engine, that would have prevented normal operation.

Aircraft

Registration
N168B
Reported as
Beech G35 (NO SERIES)
Category
Airplane
Serial number
D-4453
Built
1956
Engine
Continental IO-550-B, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 24, 2016
Departed
1U1 · Moose Creek, ID
Destination
2U5 · Kooskia, ID
Airport
2U5 · Shearer /Usfs/, runway 18, 2,000 × 15 ft, grass/turf
Equipment
Stall warning system, Auto-pilot, Electronic flight bag or handheld device, Handheld GPS

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
71
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 3, Waiver time limited special
Last flight review
February 21, 2015
Seat
Left
Restraint
3-point
Flight hours
7,997.5 total · 4,546.8 in this make and model · 7,714.5 as pilot in command · 69.6 in the last 90 days · 20.8 in the last 30 days · 6.5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 3 knots
Temperature
82 °F, dew point 43 °F
Altimeter
30.00 inHg
Observed at
KP69, 33 nm away

Docket · 2

The files NTSB released with the investigation on March 23, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.4 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 N168B · 1

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