ANC98LA150

NTSB accident investigation · Cessna 207A · Hughes, AK · September 10, 1998

Accident · No injuriesLimited investigationFinal report
Date
September 10, 1998, 15:00 local (23:00 UTC)
Place
Hughes, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7380UCessna 207A
Weather
Visual (VMC) · Day
Status
Completed · report March 30, 2000
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19980910028159A
Case key
43983

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 pilot's inadequate compensation for the wind conditions, and an inadvertent stall. A factor in the accident was the presence of a tail wind.

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.

Hard landingLanding - flare/touchdown
Airport facilities,runway/landing area condition - uphill
Weather condition - tailwindFactor
Compensation for wind conditions - inadequatePilot in commandCause
Stall - inadvertentPilot in commandCause

Analysis

The certificated airline transport pilot was landing in an uphill direction at a remote airport as part of an on-demand air taxi flight. The runway was 4,100 feet long, and 120 feet wide, with an uphill gradient of 7.1 percent. For the runway selected by the pilot, a tail wind of 20 knots, with gusts to 24 knots, was present. During the landing flare, about 3 feet above the runway, the pilot said he encountered a gust of wind, or wind shear. The airplane stalled, and contacted the runway hard on the main landing gear. After landing, the pilot reported he inspected the airplane for damage but did not notice any. The following day, the pilot noticed the aft tie-down ring, and tail skid, located on the underside of the tail cone, was broken off the airplane. In addition, the airplane received damage to the aft empennage bulkhead, and adjacent fuselage structure.

Factual narrative

On September 10, 1998, about 1500 Alaska daylight time, a wheel equipped Cessna 207A airplane, N7380U, sustained substantial damage during landing at a remote airport, about 13 miles east of Hughes, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country on-demand passenger flight under Title 14 CFR Part 135 when the accident occurred. The airplane was operated by Warbelow's Air Ventures Inc., Fairbanks, Alaska. The certificated airline transport pilot, and the sole passenger, were not injured. Visual meteorological conditions prevailed. A VFR flight plan was filed. The flight originated at the Edward G. Pitka Sr. Airport, Galena, Alaska, at 1403.

In the pilot/operator report (NTSB form 6120.1/2) submitted by the pilot, the pilot reported he was landing on runway 24 at the Indian Mountain Long Range Radar Station (LRRS) airport. The pilot said the wind conditions were 030 degrees at 20 knots, with gusts to 24 knots. During the landing flare, about 3 feet above the runway, the airplane encountered a gust of wind, or wind shear. The airplane stalled, and contacted the runway hard on the main landing gear.

After landing, the pilot reported he inspected the airplane for damage but did not notice any. The following day, September 11, 1998, the pilot began a preflight inspection of the airplane in preparation for a flight. He noticed the aft tie-down ring, and tail skid, located on the underside of the tail cone, was broken off the airplane. In addition, the airplane received damage to the aft empennage bulkhead, and adjacent fuselage structure.

The Indian Mountain LRRS, is located at 1,200 feet msl. Runway 24 is 4,100 feet long, and 120 feet wide. It has an uphill gradient of 7.1 percent.

Aircraft

Registration
N7380U
Reported as
Cessna 207A
Category
Airplane
Serial number
20700428
Airframe hours
11,518
Engine
Continental IO-520-F27B, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Warbelow'S Air Ventures Inc.
Registered owner
Art Warbelow
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 1, 1998 · 25 hours before
Departed
PAGA · Galena, AK
Destination
PAIM
Flight plan
VFR
Airport
PAIM · Indian Mountain Llrs, runway 24, 4,100 × 120 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
30
Certificates
Airline transport, Commercial, Private
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
6,530 total · 2,399 in this make and model · 5,030 as pilot in command · 120 in the last 90 days · 51 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
30° at 20 knots, gusting 24
Visibility
10 statute miles
Lowest ceiling
None
Temperature
52 °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.

Other investigations on N7380U · 2

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