Boeing 737-200 N673MA

Summary

On 7 June 1993 at about 06:28 local time, a Boeing 737-200 registered N673MA, operated by Markair Inc., was involved in an incident near Anchorage, Alaska, United States. 2 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

7 June 1993 at 06:28

Classification

Incident

Location

Anchorage, Alaska, United States

Nearest airport

Anchorage International (ANC)

Coordinates

61.1599, -149.9899

Aircraft

Boeing 737-200

Registration

N673MA

Category

Airplane

Engines

2

Operator

Markair Inc.

Operating rule

Part 91: General Aviation

Purpose of flight

Ferry

Phase of flight

Not recorded

Route

Dillingham → Unknown

Aircraft damage

Minor

Weather

VMC

Light

Day

NTSB number

ANC93IA084

Nobody was injured.

THE FAILURE OF THE NOSE LANDING GEAR INNER CYLINDER FROM AN OVERLOAD/OVERSTRESS CONDITION.

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

Read the full NTSB narrative

WHILE TAXIING OFF THE RUNWAY AT DILLINGHAM, ALASKA, THE FLIGHT CREW HEARD A 'POP' AND 'GRINDING' SOUND. THE AIRPLANE WAS SUBSEQUENTLY FERRIED TO ANCHORAGE WITH THE NOSE GEAR PINNED IN THE DOWN POSITION. UPON TOUCHDOWN IN ANCHORAGE, THE NOSE GEAR SEPARATED FROM THE AIRPLANE. A METALLURGICAL EXAMINATION OF THE AFFECTED COMPONENTS, PRIMARILY THE NOSE LANDING GEAR INNER CYLINDER, SHOWED THAT THE INNER CYLINDER HAD SEPARATED CLOSE TO THE LOWER END NEAR THE AXLES FOR THE TIRES. VISUAL EXAMINATION OF THE FRACTURE SURFACE WITH THE AID OF A BENCH BINOCULAR MICROSCOPE REVEALED FEATURES TYPICAL OF AN OVERSTRESS SEPARATION INCLUDING CHEVRON MARKS OVER THE MAJORITY OF THE FRACTURE SURFACE AND THE PRESENCE OF A 45 DEGREE FRACTURE PLANE. DURING THE PREVIOUS 12 MONTH PERIOD THERE WERE NO 'HARD' LANDINGS ON RECORD FOR THE AIRPLANE.

Quoted verbatim from the NTSB record.