Boeing 747-251F N629US

Summary

On 15 October 2000 at about 08:35 local time, a Boeing 747-251F registered N629US was involved in an incident near Anchorage, Alaska, United States. 3 people were on board and nobody was injured. The aircraft was slightly damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

15 October 2000 at 08:35

Classification

Incident

Location

Anchorage, Alaska, United States

Nearest airport

Anchorage International (PANC)

Coordinates

61.1596, -149.9893

Aircraft

Boeing 747-251F

Registration

N629US

Category

Airplane

Engines

4

Operator

Not recorded

Operating rule

Part 121: Air Carrier

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Unknown → New York

Aircraft damage

Minor

Weather

VMC

Light

Night/Dark

NTSB number

ANC01IA007

Nobody was injured.

Rupture and disintegration of main landing gear tires during the takeoff roll, and subsequent damage to the right main gear hydraulic brake system.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

A Boeing 747 cargo airplane began to taxi for departure. The crew hear a 'thump' type of noise, but attributed the noise to the airplane tires running over a rut. The captain continued taxiing. During the takeoff roll, about 130 knots indicated airspeed (IAS), the captain heard and felt another 'thump', followed by a substantial vibration. The captain said he aborted the takeoff about 148 knots IAS, and applied maximum braking and maximum reverse thrust. The airplane reached 166 knots before beginning to slow. The airplane ran off the paved end of the runway into a clearway consisting of soft dirt, stopping about 486 feet beyond the paved end of the runway as the landing gear wheels sank into the soft terrain. The runway had 11,584 feet of pavement available for use. About 1,500 feet from the beginning of the runway, a large amount of shredded tire debris, along with gouge marks consistent with tire wheel rims, were found on the runway. At the point of rest, the number 11, and number 12 tires, installed as the two aft tires on the right body landing gear assembly, were shredded and destroyed. Tires one through four, were inflated and undamaged. The number five tire was cut, torn and flat. Tires six, seven and eight, were flat. Tires nine and ten were still inflated. Tires 13, 14, 15, and 16, were flat. The nose wheel tires were undamaged and inflated. The airplane also received damage to the underside of the right flap assembly, damage to the right main landing gear hydraulic brake system, a landing gear door, and damage to the brake assemblies. The airplane's takeoff gross weight for the flight was 794,200 pounds. For takeoff operations on the runway utilized, the runway takeoff gross weight was 795,300 pounds.

Quoted verbatim from the NTSB record.