NTSB CAROL · Event
Event ANC03LA043
Aircraft involved
Probable cause & findings
The failure of the captain to maintain adequate clearance between the airplane's wingtip and a parked vehicle. A factor contributing to the accident was the failure of ground personnel to utilize a wing walker as prescribed in company policy when aircraft are operated near obstacles.
Factual narrative
On April 10, 2003, about 0935 Alaska daylight time, a de Havilland DHC-6 airplane, N886EA, sustained substantial damage when the left wing struck a parked service van as the airplane was taxiing to Gate L-2 at the Ted Stevens Anchorage International Airport, Anchorage, Alaska. The airplane was being operated as a visual flight rules (VFR) scheduled domestic passenger flight under Title 14, CFR Part 121, when the accident occurred. The airplane was operated as Flight 829, by ERA Aviation Inc., Anchorage. The captain and first officer, and the 17 passengers, were not injured. Visual meteorological conditions prevailed. A VFR flight plan was filed. The flight originated at the Kenai Municipal Airport, Kenai, Alaska, about 0855. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on April 10, the operator's director of safety reported that the airplane was taxiing to the gate area after landing. The airplane was being marshaled into a parking spot at Gate L-2 by a single ground guide utilizing hand signals. The director of safety reported that no other airplanes were parked nearby, and wing-walkers were not utilized. As the airplane was being positioned by the ground guide, the underside of the left wing struck the top of a parked fleet service van. Inspection of the wing revealed that the outboard flap hinge assembly was displaced upward. In the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1) submitted by the operator, in the optional Operator/Owner Safety Recommendation section of the report, the director of safety noted: "Wing walker was not available or used as required by company policy. Marshaller was available and used, but was standing at the parking spot. Use wing walkers anytime an aircraft is within 20 feet of an obstacle." During a telephone conversation with the NTSB IIC on April 18, the operator's director of quality control reported that the repair to the left wing required replacement of the outboard rib, the outboard flap hanger assembly, and replacement of wrinkled upper wing skin near the wingtip. The captain was taxiing the airplane to the gate area at the conclusion of a scheduled domestic passenger flight. The airplane was being marshaled into a parking spot by a single ground guide utilizing hand signals. No other airplanes were parked nearby, and wing-walkers were not utilized. As the airplane was being positioned by the ground guide, the underside of the left wing struck the top of a parked fleet service van. Inspection of the left wing revealed that the outboard flap hinge assembly was displaced upward requiring replacement of the outboard rib, the outboard flap hanger assembly, and wrinkled upper wing skin near the wingtip. The director of safety for the operator reported that a wing walker was not available or used as required by company policy when aircraft are operated near obstacles. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2003_ANC03LA043.txt.
Findings + structured fields enriched from FAA avall.mdb.
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Academic papers and agency reports matching this event's aircraft type. Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2019 · Contractor Report (CR)
DHC-6 Twin Otter Tailplane Airfoil Section Testing in the Ohio State University 7x10 Wind Tunnel
Ice contaminated tailplane stall (ICTS) has been found to be responsible for 16 accidents with 139 fatalities over the last three decades, and is suspected to have played a role in other accidents and…
- NASA NTRS 2019 · Reprint (Version printed in journal)
In-Flight Aerodynamic Measurements of an Iced Horizontal Tailplane
The effects of tailplane icing on aircraft dynamics and tailplane aerodynamics were investigated using, NASA's modified DHC-6 Twin Otter icing research aircraft.
- NASA NTRS 2019 · Reprint (Version printed in journal)
Investigation of Dynamic Flight Maneuvers With an Iced Tailplane
A detailed analysis of two of the dynamic maneuvers, the pushover and elevator doublet, from the NASA/FAA Tailplane Icing Program are discussed.
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