19980529014859A

Accident · Substantial damage

FAA accident report · Cessna 207 · Bethel, AK · May 29, 1998

Date
May 29, 1998 · 15:57 local
Place
Bethel, AK
Phase of flight
Fcd/Prec Ldg From Cruise
Operating rules
Air taxi and commuter (Part 135)
Operator
UATA
Damage
Substantial damage
Aircraft
N9956M
NTSB investigation
NTSBANC98LA059
Reported as
Cessna 207
Reported engine
Continental IO520F
People aboard
1
Fatal injuries
0
Pilot’s flight hours
4,050 total1,770 in this make and model220 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.

Engine power dropped to idle on climb to cruise. Nosed over landing in marshy tundra. (From .4) during climb to cruise while passing 2,000 feet MSL, the engine lost total power. The airplane nosed onto its back during the subsequent forced landing in marshy tundra. Postaccident inspection revealed wear between the throttle arm and the connecting hardware bushing. The throttle control lever had disconnected from the throttle arm. Service bulletin SEB95-15R1, 'throttle lever inspection,' that required a visual inspection for wear between the arm and bushing each 50 hours or 12 months, had been complied with 56 hours, 163 hours, and 268 hours prior to the accident by company mechanics. The newly overhauled engine was installed 334 hours prior to the accident. (-23) on may 29, 1998 a Cessna 207 airplane, N9956M, operated by arctic transport service inc, sustained substantial damage during a forced landing 10 miles west of Bethel Alaska. Piloted by trevor u. eissler, an airline transport pilot, who was uninjured. Visual meteorological conditions prevailed. The airplane, carrying cargo only, was on a company flight plan. The pilot reported that during climb to cruise, at 2,000 feet MSL, the engine power dropped to idle. Manipulating the engine controls did not result in power above idle. A forced landing was made in marshy tundra, the airplane nosed over onto its back.

As the FAA filed it

ENGINE POWER DROPPED TO IDLE ON CLIMB TO CRUISE. NOSED OVER LANDING IN MARSHY TUNDRA. (FROM .4) DURING CLIMB TO CRUISE WHILE PASSING 2,000 FEET MSL, THE ENGINE LOST TOTAL POWER. THE AIRPLANE NOSED ONTO ITS BACK DURING THE SUBSEQUENT FORCED LANDING IN MARSHY TUNDRA. POSTACCIDENT INSPECTION REVEALED WEAR BETWEEN THE THROTTLE ARM AND THE CONNECTING HARDWARE BUSHING. THE THROTTLE CONTROL LEVER HAD DISCONNECTED FROM THE THROTTLE ARM. SERVICE BULLETIN SEB95-15R1, 'THROTTLE LEVER INSPECTION,' THAT REQUIRED A VISUAL INSPECTION FOR WEAR BETWEEN THE ARM AND BUSHING EACH 50 HOURS OR 12 MONTHS, HAD BEEN COMPLIED WITH 56 HOURS, 163 HOURS, AND 268 HOURS PRIOR TO THE ACCIDENT BY COMPANY MECHANICS. THE NEWLY OVERHAULED ENGINE WAS INSTALLED 334 HOURS PRIOR TO THE ACCIDENT. (-23) ON MAY 29, 1998 A CESSNA 207 AIRPLANE, N9956M, OPERATED BY ARCTIC TRANSPORT SERVICE INC, SUSTAINED SUBSTANTIAL DAMAGE DURING A FORCED LANDING 10 MILES WEST OF BETHEL ALASKA. PILOTED BY TREVOR U. EISSLER, AN AIRLINE TRANSPORT PILOT, WHO WAS UNINJURED. VISUAL METEOROLOGICAL CONDITIONS PREVAILED. THE AIRPLANE, CARRYING CARGO ONLY, WAS ON A COMPANY FLIGHT PLAN. THE PILOT REPORTED THAT DURING CLIMB TO CRUISE, AT 2,000 FEET MSL, THE ENGINE POWER DROPPED TO IDLE. MANIPULATING THE ENGINE CONTROLS DID NOT RESULT IN POWER ABOVE IDLE. A FORCED LANDING WAS MADE IN MARSHY TUNDRA, THE AIRPLANE NOSED OVER ONTO ITS BACK.

NTSB investigation

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