CHI87IA201

NTSB incident investigation · Mcdonnell Douglas DC-8-71 · Chicago, IL · September 3, 1987

Incident · Minor injuriesIncident investigationFinal report
Date
September 2, 1987, 19:05 local (Sep 3, 1987, 00:05 UTC)
Place
Chicago, IL
Injuries
1 minor, 126 uninjured
Damage
No damage
Phase of flight
Standing
Aircraft
N8078UMcdonnell Douglas DC-8-71
Weather
Visual (VMC) · Night/dark
Status
Completed · report July 10, 1989
Report
Approved by Office Director
FAA report
19870902074899I
Case key
13674

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

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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/malfunctionStanding - starting engine(s)
Air cond/heating/pressurization,safety valve - failure,totalCause
Air cond/heating/pressurization - overtemperatureCause
Fuselage,cabin - smokeCause
Emergency procedure - initiatedPilot in commandFactor
Evacuation - performedPilot in commandFactor
Miscellaneous/otherStanding
Misc eqpt/furnishings,slides - movement restrictedFactor
Emergency procedure - improperFlight attendantFactor

Analysis

Smoke detected in the cabin resulted in an evacuation of the aircraft just after being pushed back from the jet-way. Subsequent investigation established that a malfunctioning pack valve had caused the air-conditioning system to overheat causing the smoke. The emergency slide at door 2R inflated partially inside the acft and was not usable. At the time of initial investigation the slide tray door from 2R was found lying on the floor inside the acft. Exits 1L, 2L, 4L, 4R and four over wing exits were used (the capt had lowered the flaps to full down for the evacuation). It was determined during investigation that the door was not opened fully enough for exit 2R to operate properly. Ual modified the training to emphasize the door opening procedure. The fa said she pulled the (manual inflation) handle on 2R.

Aircraft

Registration
N8078U
Reported as
Mcdonnell Douglas DC-8-71
Category
Airplane
Serial number
45946
Airframe hours
56,166
Engine
CFM 56-2C1, 20,560 lbs thrust, turbo fan
Damage
No damage
Flight
Part 121
Registered owner
United Airlines
Airworthiness certificate
Standard, Transport
Departed
ORD
Destination
SMF · Sacramento, CA
Flight plan
IFR
Airport
ORD · O'Hare International

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
54
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Unknown, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
14,591 total · 5,102 in this make and model · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
30° at 12 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 50 °F
Altimeter
30.00 inHg
Observed at
ORD

FAA reports on this event · 1

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