20080113000352A

Accident · Substantial damage

FAA accident report · Boeing 757-222 · San Francisco, CA · January 13, 2008

Date: January 13, 2008 · 19:32 local
Place: San Francisco, CA
Airport: San Francisco International
Phase of flight: Other Ground Ops
Operating rules: Air carrier (Part 121)
Operator: UALA
Collision: Midair collision, second aircraft
Damage: Substantial damage
Aircraft: N508UA
NTSB investigation: NTSBSEA08LA061
Reported as: Boeing 757222
Reported engine: Pratt & Whitney PW2037
Fatal injuries: 0

N508UARegistered now · Boeing 757-222S/N 24744 · Built 1990 Airframe modelBoeing 757-222 Engine modelPratt & Whitney PW2040Turbo-fan

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.

(-23) On January 13, 2008 at San Francisco International Airport, approximately 1932 hrs PST two aircraft backed into each other during push back. The united airlines (ual) Boeing 757-222 aircraft, registration number N508UA, serial number 24744 was being pushed from gate 80 to be towed to ual maintenance operations center (moc). The united express (sky west) Bombardier CL-600-2C10 aircraft, registration number N705SK, serial number 10145 had been pushed from gate 79 onto taxiway alpha with brakes set for dispatch. During push from the gates both aircraft made tail to tail contact that resulted in substantial structural damage to both aircraft. The Boeing 757-222 aircraft lower rudder, right elevator trailing edge and APU tail cone received substantial damage after impact. The Bombardier aircraft vertical tail and right horizontal received substantial damage after impact.

As the FAA filed it

(-23) ON JANUARY 13, 2008 AT SAN FRANCISCO INTERNATIONAL AIRPORT, APPROXIMATELY 1932 HRS PST TWO AIRCRAFT BACKED INTO EACH OTHER DURING PUSH BACK. THE UNITED AIRLINES (UAL) BOEING 757-222 AIRCRAFT, REGISTRATION NUMBER N508UA, SERIAL NUMBER 24744 WAS BEING PUSHED FROM GATE 80 TO BE TOWED TO UAL MAINTENANCE OPERATIONS CENTER (MOC). THE UNITED EXPRESS (SKY WEST) BOMBARDIER CL-600-2C10 AIRCRAFT, REGISTRATION NUMBER N705SK, SERIAL NUMBER 10145 HAD BEEN PUSHED FROM GATE 79 ONTO TAXIWAY ALPHA WITH BRAKES SET FOR DISPATCH. DURING PUSH FROM THE GATES BOTH AIRCRAFT MADE TAIL TO TAIL CONTACT THAT RESULTED IN SUBSTANTIAL STRUCTURAL DAMAGE TO BOTH AIRCRAFT. THE BOEING 757-222 AIRCRAFT LOWER RUDDER, RIGHT ELEVATOR TRAILING EDGE AND APU TAIL CONE RECEIVED SUBSTANTIAL DAMAGE AFTER IMPACT. THE BOMBARDIER AIRCRAFT VERTICAL TAIL AND RIGHT HORIZONTAL RECEIVED SUBSTANTIAL DAMAGE AFTER IMPACT.

NTSB investigation

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

NTSB SEA08LA061Accident · No injuriesLimited investigationFinal reportSan Francisco, CAThe company tug operator's failure to maintain clearance with another aircraft during the pushback process. Also causal was the ground controller's failure to alert the pilot of the other aircraft and tug operator of this airplane of the simultaneous pushback…Jan 14, 2008 · 2 aircraft · Substantial damage

Other reports on N508UA · 3

Matched to the same aircraft by N-number and date.

Incident 19990302016819IClimb · Detroit, MI(-5)On March 2, 1999, while climbing in the vicinity of the carleton VOR, Michigan, 3 of the four flight attendants in the extreme aft portion of united airlines flight 648 were thrown up to the ceiling and then fell to the floor of the passenger compartment.…Mar 2, 1999 Accident 19930802031169ALevel Off Touchdown · Denver, COBounced on landing. Assumed nose high attitude and dragged tail on runway.Aug 2, 1993 · Substantial damage Incident 19930213006269IFcd/Prec Ldg From Cruise · Grand Junction, COLeft generator off line. Acrid odor. APU started. Diverted to Grand juction.Feb 13, 1993