GAA16CA503

NTSB accident investigation · Cessna 185 · Fairbanks, AK · September 22, 2016

Accident · Minor injuriesData collectionFinal report
Date
September 21, 2016, 17:45 local (Sep 22, 2016, 01:45 UTC)
Place
Fairbanks, AK
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N5892TCessna 185
Defining event
Takeoff: Loss of lift
Weather
Visual (VMC) · Dusk
Status
Completed · report April 10, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
FAA report
20160921019499A
Case key
94064

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 recognize he was taking off with a tailwind and his inadequate compensation for taking off with a tailwind, which led to the airplane’s failure to attain a climb and a subsequent forced landing.

Findings · 6

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.

Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on equipmentCessna 185D: 1 caseAll aircraft: 594 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 185D: 2 casesAll aircraft: 9,295 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Response/compensationCessna 185D: 1 caseAll aircraft: 594 casesProbable cause
Performance/control parameters: climb rateAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 185D: 2 casesAll aircraft: 265 casesProbable cause
Object/animal/substance: debris/dirt/foreign objectEnvironmental issues › Physical environment · Contributed to outcomeCessna 185D: 1 caseAll aircraft: 101 cases

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 tailwheel-equipped airplane, he and his passenger waited most of the day for the 30-knot wind to subside before departing the 1,200-ft-long dirt and grass airstrip. He reported that the wind velocity had decreased to 10 knots and that he had calculated that, with the 10-knot headwind, the airplane would rotate about 700 ft down the runway. The pilot monitored the wind via ribbons placed at various locations around the airstrip. During takeoff, the airplane rotated about 700 ft down the runway and climbed to about 8 ft above the ground. The pilot stated that it "then it felt like we lost our lift." The pilot recalled that there wasn't enough runway remaining to land and that there was a brush-covered bank at the departure end of the runway. The airplane started to settle to the ground, and although operating at full power and on the cusp of a stall, they cleared the bank. Beyond the bank, the pilot landed the airplane on a short sand bar, but the airplane overran the sand bar and impacted several large rocks. After exiting the airplane, the pilot noticed that he had departed with an 8- to 10-knot tailwind. The airplane sustained substantial damage to the left-wing strut, the aileron, the horizontal stabilizer and the elevator. The pilot reported that there were no mechanical malfunctions or anomalies with the airframe or engine that would have prevented normal operation.

Factual narrative

According to the pilot of the tailwheel-equipped airplane, he and his passenger waited for the majority of the day for the 30-knot wind to subside before departing the 1,200-ft. dirt and grass airstrip. He reported that the wind velocity had decreased to 10 knots and that he had calculated that with the 10-knot headwind, the airplane would rotate about 700 feet down the runway. The pilot monitored the wind via ribbons placed at various locations around the airstrip. He reported that during takeoff the airplane rotated about 700 feet down the runway, and climbed to about 8 feet above the ground; "then it felt like we lost our lift". The pilot recalled that there wasn't enough runway remaining to land, and there was a brush covered bank at the departure end of the runway. He reported that the airplane started to settle to the ground, and although operating at full power and on the cusp of a stall, they cleared the bank. Beyond the bank, the pilot landed the airplane on a short sand bar, but the airplane overran the sand bar and impacted several large rocks. The pilot reported that after exiting the airplane, he noticed that he had departed with an 8-10 knot tailwind. The airplane sustained substantial damage to the left-wing strut, the aileron, the horizontal stabilizer and the elevator. The pilot reported that there were no mechanical malfunctions or anomalies with the airframe or engine that would have prevented normal operation.

Aircraft

Registration
N5892T
Reported as
Cessna 185 (D)
Category
Airplane
Serial number
185-0792
Built
1964
Airframe hours
5,916.3
Engine
Continental IO-470F, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 4, 2016
Departed
PVT · Delta Junction, AK
Destination
PVT · Delta Junction, AK
Flight plan
VFR
Equipment
None

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
49
Injuries
Minor
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Waiver time limited special
Last flight review
June 15, 2016
Seat
Left
Restraint
3-point
Flight hours
3,064 total · 44 in this make and model · 2,779.1 as pilot in command · 295 in the last 90 days · 56 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dusk
Wind
10 knots
Visibility
10 statute miles
Lowest ceiling
None

Docket · 2

The files NTSB released with the investigation on March 22, 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 N5892T · 2

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