19930902052749A

Accident · Substantial damage

FAA accident report · Cessna 170B · Wulik River, AK · September 2, 1993

Date
September 2, 1993 · 22:30 local
Place
Wulik River, AK
Phase of flight
Takeoff Ground Roll
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N2384D
NTSB investigation
NTSBANC93LA168
Reported as
Cessna 170B
Reported engine
Continental O300A
People aboard
1
Fatal injuries
0
Pilot’s flight hours
4,602 total140 in this make and model320 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(.4)The pilot said while attempting to takeoff from a mountain ridge, the left main wheel entered a depression and he had to use harder than normal control forces to keep the airplane aligned with the takeoff path. When the airplane came out of the depression, it bounced into the air and because of the left quartering headwind, it came back down on the right main wheel and the right wing. The airplane then spun around clockwise about 180 degrees and hit on the nose, then the left wing. Both main landing gear boxes were torn out of the fuselage, which was also damaged. (.19)on September 2, 1993, at 2230 adt, the pilot of a wheel equipped Cessna 170 airplane, N2384D, lost control and dragged a wing while attempting to takeoff from a mountain ridge near the Wulik River, approximately 80 miles northwest of kotzebue, Alaska. The airline transport pilot, the sole occupant, was not injured, and the airpalne was substantially damaged. The personal flight, operating under 14 CFR part 91, was destined for another remote landing area located about 1 mile away from the accident site. Visual meteorological conditions existed, and a VFR fligth plan was filed. When th e pilot was contacted by telephone on September 7, 1993, he stated the following, in part: "during the takeoff roll, the left main wheel got into a depression and I had to use harder then normal control forces to keep the airplane aligned with the takeoff path. When the airplane came out of the depression, it bounced into the air and because of the left quartering headwind, it came back down on the right main whell and the right wing. The airplane then spun around clockwise about 180 degrees and hit on the nose, then the left wing. Both main landing gear boxes were torn out of the fuselage, amd the fuselage itself was damaged.

As the FAA filed it

(.4)THE PILOT SAID WHILE ATTEMPTING TO TAKEOFF FROM A MOUNTAIN RIDGE, THE LEFT MAIN WHEEL ENTERED A DEPRESSION AND HE HAD TO USE HARDER THAN NORMAL CONTROL FORCES TO KEEP THE AIRPLANE ALIGNED WITH THE TAKEOFF PATH. WHEN THE AIRPLANE CAME OUT OF THE DEPRESSION, IT BOUNCED INTO THE AIR AND BECAUSE OF THE LEFT QUARTERING HEADWIND, IT CAME BACK DOWN ON THE RIGHT MAIN WHEEL AND THE RIGHT WING. THE AIRPLANE THEN SPUN AROUND CLOCKWISE ABOUT 180 DEGREES AND HIT ON THE NOSE, THEN THE LEFT WING. BOTH MAIN LANDING GEAR BOXES WERE TORN OUT OF THE FUSELAGE, WHICH WAS ALSO DAMAGED. (.19)ON SEPTEMBER 2, 1993, AT 2230 ADT, THE PILOT OF A WHEEL EQUIPPED CESSNA 170 AIRPLANE, N2384D, LOST CONTROL AND DRAGGED A WING WHILE ATTEMPTING TO TAKEOFF FROM A MOUNTAIN RIDGE NEAR THE WULIK RIVER, APPROXIMATELY 80 MILES NORTHWEST OF KOTZEBUE, ALASKA. THE AIRLINE TRANSPORT PILOT, THE SOLE OCCUPANT, WAS NOT INJURED, AND THE AIRPALNE WAS SUBSTANTIALLY DAMAGED. THE PERSONAL FLIGHT, OPERATING UNDER 14 CFR PART 91, WAS DESTINED FOR ANOTHER REMOTE LANDING AREA LOCATED ABOUT 1 MILE AWAY FROM THE ACCIDENT SITE. VISUAL METEOROLOGICAL CONDITIONS EXISTED, AND A VFR FLIGTH PLAN WAS FILED. WHEN TH E PILOT WAS CONTACTED BY TELEPHONE ON SEPTEMBER 7, 1993, HE STATED THE FOLLOWING, IN PART: "DURING THE TAKEOFF ROLL, THE LEFT MAIN WHEEL GOT INTO A DEPRESSION AND I HAD TO USE HARDER THEN NORMAL CONTROL FORCES TO KEEP THE AIRPLANE ALIGNED WITH THE TAKEOFF PATH. WHEN THE AIRPLANE CAME OUT OF THE DEPRESSION, IT BOUNCED INTO THE AIR AND BECAUSE OF THE LEFT QUARTERING HEADWIND, IT CAME BACK DOWN ON THE RIGHT MAIN WHELL AND THE RIGHT WING. THE AIRPLANE THEN SPUN AROUND CLOCKWISE ABOUT 180 DEGREES AND HIT ON THE NOSE, THEN THE LEFT WING. BOTH MAIN LANDING GEAR BOXES WERE TORN OUT OF THE FUSELAGE, AMD THE FUSELAGE ITSELF WAS DAMAGED.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.