Status:	Final
Date:	09 JUN 1987
Time:	08:55
Type:	Boeing 727-90C
Operator:	Alaska Airlines
Registration:	N766AS
C/n / msn:	19728/536
First flight:	1968-02-17 (19 years 4 months)
Total airframe hrs:	49937
Engines:	3 Pratt & Whitney JT8D-7A
Crew:	Fatalities: 0 / Occupants: 2
Passengers:	Fatalities: 0 / Occupants: 0
Total:	Fatalities: 0 / Occupants: 2
Airplane damage:	Destroyed
Airplane fate:	Written off (damaged beyond repair)
Location:	Anchorage International Airport, AK (ANC) (United States of America)
Phase:	Pushback / towing (PBT)
Nature:	-
Departure airport:	-
Destination airport:	-

Narrative:
The mechanic in charge of taxiing the empty aircraft allowed an avionics technician to occupy the pilots seat. They inadvertently deactivated the brake pressurization system. The aircraft struck a passenger jet way and caught fire.

PROBABLE CAUSE:
"Brakes(normal)..inadvertent deactivation..company maintenance personnel
Checklist..not used..company maintenance personnel
CONTRIBUTING FACTORS
Planning/decision..inadequate..company maintenance personnel"

Sources:
» Aviation Letter 248
» ICAO Adrep Summary 2/91 (#1)
» NTSB