Boeing 727-231 N52311

Summary

On 27 March 1986 at about 04:41 local time, a Boeing 727-231 registered N52311, operated by Trans World Airlines, was involved in an incident near Boston, Massachusetts, United States. 96 people were on board and 2 had minor injuries. No probable cause statement is available for this record.

Date

27 March 1986 at 04:41

Classification

Incident

Location

Boston, Massachusetts, United States

Nearest airport

Logan Intl (BOS)

Coordinates

Not recorded

Aircraft

Boeing 727-231

Registration

N52311

Category

Airplane

Engines

3

Operator

Trans World Airlines

Operating rule

Part 121: Air Carrier

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

St Louis → Unknown

Aircraft damage

Not recorded

Weather

VMC

Light

Night/Bright

NTSB number

NYC86IA093

2 people had minor injuries.

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

TWO OF 3 REQD FLT ATTENDANTS (F/A'S) WERE DISTRIBUTING PASSENGER (PAX) COATS AS THE ACFT WAS BEING TAXIED AFTER LNDG. SMOKE FM AN OVERHEATED AIR COND (A/C) PACK BGN ENTERING THE CABIN & THE F/A'S RETURNED TO THEIR DUTY STATIONS. THE FLT CREW STOPPED THE ACFT AT THE GATE & SHUT DWN THE ENGS, BUT LEFT THE APU RUNNING TO PROVIDE ELECTRICITY FOR LIGHTING. THEF/A'S OPENED THE L FWD DOOR & GND PSNL OPENED THE REAR STAIR DOOR TO DEPLANE THE PAX. THE CAPT MADE AN ANNOUNCEMENT TO KEEP THE PAX CALM, BUT SMOKE BCM DENSE & PAX OPENED THE EMERG EXITS OVR THE WINGS & BGN EXITING FM THEM. TWO PAX RCVD MINOR INJURIES WHILE EXITING OVR THE WINGS. AN INVESTIGATION REVEALED THE ACFT HAD BEEN DISPATCHED WITH THE R PACK COOL-ING FAN INOP AS AUTHORIZED BY THE MIN EQUIP LIST (MEL). DRG FLT, A RADIO INTERFERENCE FILTER IN THE A/C SYS FAILED WHICHALLOWED THE FWD PACK SHUT-OFF VALVE TO OPEN, BUT NOT CLOSE. THIS PERMITTED APU AIR TO RUN THE AFFECTED PACK EVEN THO THESWITCH WAS OFF & A CIRCUIT BRKR WAS PULLED. WITH THE ENGS SHUT DOWN & THE R COOLING FAN INOP, THE SYS OVERHEATED.

Quoted verbatim from the NTSB record.