# NTSB SEA00LA094: Boeing 767-200, N767AX, Seattle, WA, May 25, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 24, 2000, 17:40 local (May 25, 2000, 00:40 UTC) - Place: Seattle, WA - Coordinates: 47.539661, -122.309783 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=47.5397&lon=-122.3098&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed, report May 18, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 49299 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA00LA094 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/49299/pdf - Page: https://openairdocs.org/ntsb/SEA00LA094 ## Probable cause (aircraft 2) The failure of the B-767 flight crew to ensure their aircraft's jet blast was not a hazard to the Cessna. A factor for the Cessna was the B-767 moving on the taxiway. A factor for the B-767 was the Cessna standing in the runup area. A factor for both aircraft was congested/confined taxiway conditions. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Propeller blast or jet exhaust/suction, taxi - from landing - object - aircraft parked/standing (contributing factor) - airport facilities,taxiway condition - congested/confined area (contributing factor) - aircraft handling - improper, flightcrew (cause) - Propeller blast or jet exhaust/suction, standing - engine(s) operating - object - aircraft moving on ground (contributing factor) - airport facilities,taxiway condition - congested/confined area (contributing factor) - aircraft handling - improper, pilot of other aircraft (cause) - Miscellaneous/other, standing - engine(s) operating ## Analysis (aircraft 2) The Boeing 767 (B-767) exited runway 31L at taxiway A4 after landing in accordance with the tower's instructions, and proceeded south on parallel taxiway A to its company ramp area. The company ramp area is across taxiway A from, and adjacent to, a light aircraft runup area for runway 31R at taxiway A8, requiring inbound aircraft to make an approximately 130-degree left turn into parking abeam this runup area. While the B-767 flight crew indicated they saw a small aircraft (a Cessna 150) in the 31R/A8 runup area as they approached it, they continued into the parking area with the Cessna still in the runup area, passing 'very close' laterally (according to the Cessna pilot) and initiating the left turn into the parking ramp 'with enough power to maintain forward progress for [the] turn' (according to the B-767 captain.) Jet blast from the turning B-767 upset the Cessna onto its nose and wingtip. ## Factual narrative (aircraft 2) On May 24, 2000, approximately 1740 Pacific daylight time, a Cessna 150, N60825, was blown up onto its nose and wingtip while awaiting takeoff clearance for runway 31R at Boeing Field/King County International Airport, Seattle, Washington, for a 14 CFR 91 flight to Friday Harbor, Washington. The Cessna 150 sustained substantial damage in the occurrence, but the private pilot-in-command of the Cessna was not injured. The Cessna pilot reported that his aircraft was upset by jet blast from an Airborne Express Boeing 767 (B-767), N767AX, operating as Airborne Express flight 1414 on a 14 CFR 121 non-scheduled domestic cargo flight from Wilmington, Ohio. At the time the Cessna was upset, the B-767, which had just landed at Boeing Field, was executing a left turn into the Airborne Express ramp adjacent to the Cessna, which was in the runway 31R runup area at taxiway A8. There were no injuries to the airline transport pilot-in-command, first officer, or a jumpseat rider aboard the B-767, and no damage to the B-767 in the accident. Also, no other damage to any other property nor injuries to other persons were reported. Visual meteorological conditions, with winds from 300 degrees true at 6 knots, were reported at Boeing Field at 1753. The B-767 was on an instrument flight rules (IFR) flight plan, and the Cessna was not on a flight plan. The Cessna pilot indicated that at the time of the occurrence, his airplane was in the south portion of the runup area, headed generally north. He stated that he had just completed his runup and switched to the tower frequency, and that another aircraft in the runup area moved out of the runup area and onto runway 31R for departure just ahead of him. The Cessna pilot stated that as the B-767 approached his aircraft, there was "lots of vertical clearance" from the B-767's wingtip to his aircraft, although the lateral clearance from the B-767's wingtip to his aircraft "appeared very close." He reported that as the B-767 reached a position abreast of him, it turned away from him. The Cessna pilot reported: When my position was relative aft of the B767 the jet blast raised my right wing rolling the aircraft left and forward onto the left wing tip and propeller....The plane continued a left roll to what felt like a high angle of rotation on the left wingtip-prop axis....[Then] the turn of the B767 relieved the blast pressure, and my aircraft came back down on her gear. Statements from the B-767 flight crew (provided by Airborne Express) indicated that after exiting runway 31L to the right at taxiway A4 in accordance with the tower's instructions, as the aircraft taxied southeast-bound on taxiway A (which parallels the two parallel runways on the east side of the airport), the flight crew noted two aircraft in the runway 31R runup area. The crew reported that the captain taxied slightly left to ensure adequate clearance with these two aircraft, then, after passing the aircraft, the captain returned to the taxiway centerline. The B-767 captain reported that when he started the turn into the parking area, the B-767's ground speed was 3 knots, "with enough power to maintain forward progress for [an] approximately 130 [degree] left turn." The crew reported there was limited room in the parking area, with an Airborne Express DC-8 aircraft parked in the area and "several ramp loaders and other ground equipment" between the B-767's parking spot and the parked DC-8. The B-767 flight crew reported they were unaware of the occurrence with the Cessna until maintenance personnel informed them after engine shutdown. The Cessna pilot and (in a written statement to the FAA) the individual who marshaled the B-767 into its parking spot both stated that to avoid a jet blast incident, the B-767 captain had the option to stop his aircraft on the taxiway and hold short of the runup area until it was clear. Alternatively, the Cessna pilot suggested, large aircraft taxiing to parking areas in the vicinity of runup areas could be directed by ATC ground control to taxi down parallel taxiway B (to the west of the runways) to parking. This taxi route is free of potential jet blast conflicts with the taxiway A8 runup area for runway 31R but requires a crossing back across the primary instrument runway, 13R/31L. ## Aircraft 1 - Registration: [N767AX](https://openairdocs.org/aircraft/N767AX), registered now, S/N 22785, built 1983 (OpenAirDocs) - Reported make and model: Boeing 767-200 - Registry model: [Boeing 767-281](https://openairdocs.org/model/boeing-767-281) (registry code 1385129) (OpenAirDocs) - Registry engine: [GE CF6-80 series](https://openairdocs.org/engine/ge-cf6-80-series) (registry code 30025, turbo-fan) (OpenAirDocs) - Category: Airplane - Serial number: 22785 - Engines: GE CF6-80 60030 lbs thrust turbo fan - Damage: No damage - Flight: Part 121 - Registered owner: Abx Air Inc. - Airworthiness certificate: Special, Experimental (Special) - Departed: ILN, WILMINGTON, OH - Destination: BFI - Flight plan: IFR - Airport: BFI, King Co Intl/Boeing Field ## Aircraft 2 - Registration: [N60825](https://openairdocs.org/aircraft/N60825), registered now, S/N 15070603, built 1969 (OpenAirDocs) - Reported make and model: Cessna 150J - Registry model: [Cessna 150J](https://openairdocs.org/model/cessna-150j) (registry code 2071820) (OpenAirDocs) - Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 15070603 - Engines: Continental O-200 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Robert A. Shepp - Airworthiness certificate: Standard, Utility - Departed: BFI - Destination: FHR, FRIDAY HARBOR, WA - Airport: BFI, King Co Intl/Boeing Field ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot, aircraft N767AX; age 51; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: unknown, unknown; seat: left; flight hours: 16,000 total, 30 in this make and model, 30 in the last 90 days - Pilot, aircraft N60825; age 49; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 362 total, 351 in this make and model, 309 as pilot in command, 31 in the last 90 days, 16 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 280° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 66 °F, dew point 43 °F - Altimeter: 29.00 inHg - Observed at: BFI ## FAA reports on this event (2) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20000524012561A](https://openairdocs.org/incident/20000524012561A), May 24, 2000: Boeing 767200, Seattle, WA, No damage. (-23)While waiting for takeoff in the prescribed area at Boeing field runway 31R,taxiway A8, N60825, a Cessna 150, was blown over on its left wing tipfollowing… - [Accident 20000524012562A](https://openairdocs.org/incident/20000524012562A), May 24, 2000: Cessna 150J, Seattle, WA, No damage. (-23) While waiting for takeoff in the prescribed area at Boeing field runway 31R, taxiway A8, N60825, a Cessna 150, was blown over on its left wing tip… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.