- Date
- March 26, 1986, 23:41 local (Mar 27, 1986, 04:41 UTC)
- Place
- Boston, MA
- Injuries
- 2 minor, 94 uninjured
- Damage
- No damage
- Phase of flight
- Taxi
- Aircraft
- N52311Boeing 727-231
- Weather
- Visual (VMC) · Night/bright
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19860326086489I
- Case key
- 30236
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
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.
Analysis
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.
Aircraft
- Registration
- N52311
- Reported as
- Boeing 727-231
- Category
- Airplane
- Serial number
- 19830
- Airframe hours
- 44,246
- Engine
- P&W JT8D-9A, turbo fan
- Damage
- No damage
- Flight
- Part 121
- Operator
- Trans World Airlines
- Registered owner
- First Security Bank Utah
- Airworthiness certificate
- Standard, Transport
- Departed
- STL · St Louis, MO
- Flight plan
- IFR
- Airport
- BOS · Logan Intl, runway 22L, 10,005 × 150 ft, asphalt
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 48
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 7,792 total · 702 in this make and model · 4 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Night/bright
- Wind
- 220° at 15 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- None
- Temperature
- 54 °F, dew point 46 °F
- Altimeter
- 30.00 inHg
- Observed at
- BOS
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.