ANC89IA032

NTSB incident investigation · Boeing 727-222 · Anchorage, AK · January 9, 1989

Incident · No injuriesIncident investigationFinal report
Date
January 9, 1989, 12:58 local (16:58 UTC)
Place
Anchorage, AK
Injuries
441 uninjured
Phase of flight
Standing
Aircraft
N7298UBoeing 727-222N7464Boeing 747
Weather
Visual (VMC) · Day
Status
Completed · report August 26, 1992
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19890109003502I
Case key
5126

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

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Probable cause

The NTSB’s determination of the probable cause, and any contributing factors.

Improper placement of the 727 on the ramp and the failure of the 747 crew to maintain separation.

Improper placement of the 727 on the ramp and the failure of the 747 crew to maintain separation.

Analysis

The united airlines Boeing 727 was pushed back from the gate, and was parked on the nonmovement area of the ramp. A korean airlines Boeing 747 was taxiing west on the taxiway, when the B-727'S right wingtip struck the lower rudder on the B-727. The B-747 was 3 feet off the center line taxiway; the B-727 was pushed back away from the gate and was parked. The tail section of the B-727 was inside the taxi zone when the collision occurred.

The united airlines Boeing 727 was pushed back from the gate, and was parked on the nonmovement area of the ramp. A korean airlines Boeing 747 was taxiing west on the taxiway, when the B-747'S right wingtip struck the lower rudder on the B-737. The B-747 was 3 feet off the center line taxiway; the B-727 was pushed back away from the gate and was parked. The tail section of the B-727 was inside the taxi zone when the collision occurred.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

On ground/water collision with objectStanding - engine(s) not operating
Object - aircraft moving on ground
Aircraft handling - improperGround personnelCause
Clearance - not maintainedPilot of other aircraftCause
On ground/water collision with objectTaxi - from landing
Object - aircraft parked/standing
Clearance - not maintainedPilot in commandCause
Aircraft handling - improperGround personnelCause

Aircraft · 2

Registration
N7298U
Reported as
Boeing 727-222
Category
Airplane
Serial number
21833
Airframe hours
30,401
Engine
P&W JT-8D-15, 15,000 lbs thrust, turbo fan
Damage
Minor damage
Flight
Part 121
Registered owner
United Airlines
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · December 26, 1988 · 105 hours before
Destination
SEA · Seattle, WA
Flight plan
IFR
Airport
ANC · Anchorage
Registration
N7464
Reported as
Boeing 747
Category
Airplane
Serial number
20771
Engine
P&W JT9D-7A, 46,950 lbs thrust, turbo fan
Damage
Minor damage
Flight
Part 129
Operator
Korean Airlines
Registered owner
Korean Airlines, Inc.
Airworthiness certificate
Standard, Transport
Airport
ANC · Anchorage

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot, aircraft N7298U
Age
50
Certificates
Commercial, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
17,200 total
Role
Pilot, aircraft N7464
Age
54
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 5 knots
Visibility
90 statute miles
Lowest ceiling
None
Temperature
21 °F, dew point 19 °F
Altimeter
29.00 inHg
Observed at
ANC, 5 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.