DCA22LA175

NTSB accident investigation · Boeing 777 · Chicago, IL · August 6, 2022

Accident · No injuriesClass 4 · LimitedFinal report
Date
August 5, 2022, 20:32 local (Aug 6, 2022, 01:32 UTC)
Place
Chicago, IL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
A7-BFHBoeing 777
Defining event
Taxi-from runway: Ground collision
Weather
Visual (VMC) · Night
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Major Investigations Division
Case key
105684

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The ground controller’s inappropriate routing of the B777 through a non-movement area, resulting in the airplane’s right wingtip contacting a light pole. Contributing to the accident was the lack of an appropriate display of taxiway BB2 as a restricted movement area on the ASDE-X and the flight crew’s acceptance of ATC instruction that was contrary to NOTAM information.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Personnel issuesPersonnel issues › Task performance · ATC personnelAll aircraft: 137 casesProbable cause
Personnel issuesPersonnel issues › Experience/knowledge · Flight crewAll aircraft: 10 casesProbable cause
Design: interface designOrganizational issues › Development · ATCAll aircraft: 3 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

Qatar Airways flight 8141 struck a light pole with its right wingtip while taxing to parking at Chicago O’Hare International Airport (KORD), Chicago, Illinois. The 2 pilots on board were uninjured, and the airplane was substantially damaged. The non-scheduled international cargo flight was operating under the provisions of 14 Code of Federal Regulations Part 129 from Hartsfield-Jackson International Airport (KATL), Atlanta, Georgia, to KORD. After landing runway 10C at KORD, the tower controller instructed the accident airplane to taxi off the runway via taxiway F followed by a left turn onto taxiway P, and to contact ground on 121.75. The ground controller verified the flight was cargo and instructed the aircraft to continue to taxiway CC and hold short of runway 10L. Shortly after the hold, they were cleared to cross runway 10L, instructed to hold short of taxiway K, and told to contact ground on 121.9. According to air traffic control (ATC) audio, the ground controller instructed the accident airplane to turn left on taxiway K and taxi via taxiway BB to taxiway BB2 to taxiway Z. While taxiing down taxiway BB2, the right wingtip contacted a light pole in the central deicing area adjacent to the taxiway. Figure 1. Airport diagram zoomed into the area of aircraft collision with light pole - with taxi route (green line) and accident location (yellow star) superimposed onto the airport map. The Qatar Airways crew had access to information on the taxi limitations on taxiway BB2. The FAA chart supplement valid for the time of the accident stated in the airport remarks on the 2nd page that taxiway BB2 was closed “to wingspan more than 118 ft.” Additionally, an airport notice to air mission (NOTAM), valid at the time of the accident, designated that taxiway AA between taxiway K and taxiway U as a non-movement area between June 5 and October 15, 2022. The crew reported reviewing NOTAMs prior to leaving their departure airport and the captain was referencing the airport diagram on his electronic flight bag during the taxi since this was his second time at the airport and the first time for the first officer. Taxiway BB2 was on the southern border of the central deicing facility for the airport. The area on taxiway BB2 where the accident occurred (between taxiway Z and taxiway AA) was considered a non-movement area as part of the central deicing facility and was not to be used to route taxiing aircraft. Facility SOPs noted that “all non-movement areas will be depicted on the ASDE-X as a restricted trait area (YELLOW BOX)” At the time of the accident, the ASDE-X depicted a yellow restricted trait area for the central deicing pad, however the restricted area on the display did not extend to taxiway BB2, despite the taxiway’s classification as a non-movement area. Figure 2: Screen capture zoomed into the area of impact at the time of event from the FAA legal recording playback of the ASDE-X display processor. The accident aircraft is shown as an orangeairplane symbol, and the restricted trait area is shown within the hashed yellow box. (Source: FAA)

Aircraft

Registration
A7-BFH
Reported as
Boeing 777 (FDZ)
Category
Airplane
Serial number
42298
Engines
General Electric GE90-115B, 115,000 lbs thrust, turbo fanGeneral Electric GE90-115B, 115,000 lbs thrust, turbo fan
Damage
Substantial damage
Flight
Part 129
Operator
Qatar Airways Group Q.J.S.C, doing business as Qatar Airways - Qatar Airways Cargo
Registered owner
Qatar Aviation Lease Company Q.J.S.C
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · July 12, 2022
Departed
KATL · Atlanta, GA
Destination
Same as departure
Flight plan
IFR
Airport
ORD · Chicago O'Hare Intl, runway 10C, 10,800 × 200 ft, asphalt
Equipment
ADS-B, Angle of attack indicator, Auto-pilot, Data recorder, Stall warning system, Satellite tracking device, Onboard weather, Electronic primary flight display, Electronic multifunction display, Electronic flight bag or handheld device

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
62
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
July 11, 2022
Seat
Left
Restraint
5-point
Flight hours
21,656 total · 471 in this make and model · 15,945 as pilot in command · 221 in the last 90 days · 54 in the last 30 days · 2 in the last 24 hours
Role
Co-pilot
Age
35
Injuries
None
Certificates
Airline transport, Foreign
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
May 2, 2022
Seat
Right
Restraint
5-point
Flight hours
5,162 total · 234 in this make and model · 115 as pilot in command · 157 in the last 90 days · 73 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night
Wind
220° at 3 knots
Visibility
10 statute miles
Lowest ceiling
8,500 ft broken
Temperature
82 °F, dew point 72 °F
Altimeter
30.02 inHg

Docket · 6

The files NTSB released with the investigation on April 25, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 117 MB in all.