BFO90FA017

NTSB accident investigation · Douglas DC-10 · Baltimore, MD · January 2, 1990

Accident · Serious injuriesField investigationFinal report
Date
January 2, 1990, 00:07 local (05:07 UTC)
Place
Baltimore, MD
Injuries
3 serious, 7 minor, 247 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N109AADouglas DC-10
Weather
Visual (VMC) · Night/dark
Status
Completed · report December 8, 1992
Report
Approved by Office Director
FAA report
19900102066289A
Case key
11540

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

Injuries associated with the evacuation of the aircraft.

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.

Airframe/component/system failure/malfunctionCruise - normal
Air cond/heating/pressurization - overtemperatureCause
Air cond/heating/pressurization - smokeFactor
Hazardous materials leak/spillDescent - emergency
Miscellaneous/otherStanding - engine(s) not operating
Evacuation - intentional

Analysis

Smoke entered the flight deck and cabin during cruise flight and the flight diverted to and landed at bwi. After the flight came to a stop on the runway, the captain ordered the emergency evacuation of the aircraft. All the emergency exits were used, except the overwing exits. When the overwing exits were deployed, they blew over the rear instead of over the front of the wing and were deemed unusable. Examination of the aircraft revealed the no. 1 air conditioning module overheated and oil residue on it was the smoke source.

Aircraft

Registration
N109AA
Reported as
Douglas DC-10
Category
Airplane
Serial number
46509
Engine
GE CF6-6, 40,000 lbs thrust, turbo fan
Damage
No damage
Flight
Part 121
Operator
American Airlines
Registered owner
Unknown
Departed
DFW · Dallas, TX
Destination
LGA · New York, NY
Flight plan
IFR
Airport
BWI · Baltimore-Washington, runway 28, 9,452 × 200 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
47
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,506 in this make and model

Weather

Conditions
Visual (VMC) · Night/dark
Wind
280° at 12 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
34 °F, dew point 27 °F
Altimeter
30.00 inHg
Observed at
BWI

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N109AA · 3

Matched to the same aircraft by N-number and date.