Boeing 737-2H4 N86SW

Summary

On 3 January 1986 at about 13:22 local time, a Boeing 737-2H4 registered N86SW was involved in an incident near Dallas, Texas, United States. 44 people were on board and nobody was injured. The aircraft was slightly damaged. No probable cause statement is available for this record.

Date

3 January 1986 at 13:22

Classification

Incident

Location

Dallas, Texas, United States

Nearest airport

Love Field (DAL)

Coordinates

32.8304, -96.8509

Aircraft

Boeing 737-2H4

Registration

N86SW

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 121: Air Carrier

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Unknown → Austin

Aircraft damage

Minor

Weather

VMC

Light

Day

NTSB number

FTW86MA030

Nobody was injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

THIS INCIDENT OCCURRED WHEN THE NO. 2 ENGINE EXPERIENCED AN AFT ENGINE MOUNT CONE BOLT FAILURE AND THE SUBSEQUENT FAILURE OF THE SECONDARY SUPPORT LINK (STAINLESS STEEL CABLE). THE FAILURE OF BOTH AFT ENGINE SUPPORT ASSEMBLIES DURING THE TAKEOFF ROLL ALLOWED THE AFT SECTION OF THE ENG TO HANG DOWN TO WITHIN 4' OF THE GROUND. AS A RESULT, THE NO.2 THRUST REVERSER ACTUATOR ASSEMBLY DRUG THE RUNWAY ON ROTATION. IN ADDITION, ONE LEADING EDGE FLAP AND THE FORWARD ENGINE FAIRING WERE SLIGHTLY DAMAGED. THE ACFT SUBSEQUENTLY RETURNED TO THE ARPT AND LANDED WITHOUT FURTHER INCIDENT. METALLURGICAL EXAMINATION OF THE CONE BOLT REVEALED THAT IT FAILED AS A RESULT OF FATIGUE, MOST PROBABLY DUE TO IMPROPER INSTALLATION OF THE BOLT, SPECIFICALLY, THAT IT WAS UNDER TORQUED WHEN THE OPERATOR RE-INSTALLED THE ENG. THE SAFETY CABLE FAILED AS A RESULT OF OVERSTRESS, PROBABLY INDUCED WHEN THE ACFT ENCOUNTERED A ROUGH STRETCH OF RUNWAY DURING THE TAKEOFF ROLL.

Quoted verbatim from the NTSB record.