CHI93LA043

NTSB accident investigation · Boeing 727-232 · Chicago, IL · November 28, 1992

Accident · Serious injuriesLimited investigationFinal report
Date
November 27, 1992, 20:39 local (Nov 28, 1992, 02:39 UTC)
Place
Chicago, IL
Injuries
1 serious, 5 minor, 118 uninjured
Damage
No damage
Phase of flight
Standing
Aircraft
N401DABoeing 727-232
Weather
Visual (VMC) · Night/dark
Status
Completed · report October 15, 1993
Report
Approved by Office Director
Safety recommendations
Yes
FAA report
19921127055899A
Case key
15631

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

The captain's inadequate coordination with the ground and flight crew. Factors related to the accident were: the passenger's perception that the APU exhaust was a fire, which resulted in action that initiated an evacuation.

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.

Miscellaneous/otherStanding - engine(s) not operating
Powerplant - switched off
Generator - inadvertent deactivationPilot in commandFactor
Passenger compartment light(s) - disconnected
Apu - selectedFlight engineer
Visual/aural perceptionPassengerFactor
Evacuation - initiatedPassengerFactor
Crew/group coordination - inadequatePilot in commandCause

Analysis

The flight had arrived at the jetway and the passengers were beginning to deplane. Before external ground power was supplied to the airplane, the capt prematurely shut down the number one engine which was supplying electrical power to the cabin. When the engine was shut down, the main cabin lights went out, followed immediately by the illumination of the battery-powered emergency floor lights. The flight engineer announced to the capt that he was starting the auxiliary power unit (APU). As he started the APU, an exhaust flame momentarily came out from the APU exhaust pipe located near the top of the right wing root. Some passengers yelled 'fire' and began an uncommanded evacuation through the overwing exits. Crew members were able to stop the evaucation, but not before several passengers had jumped off the wings and incurred injuries.

Aircraft

Registration
N401DA
Reported as
Boeing 727-232
Category
Airplane
Serial number
21145
Engine
P&W JT8D, 15,500 lbs thrust, turbo fan
Damage
No damage
Flight
Part 121
Operator
Delta Airlines
Registered owner
Delta Airlines
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · January 2, 2000
Departed
MCO · Orlando, FL
Destination
ORD
Flight plan
IFR

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
59
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
19,998 total · 8,860 in this make and model · 106 in the last 90 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
220° at 7 knots
Visibility
8 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F

FAA reports on this event · 1

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