Houston Intercontinental Airport
Aircraft Accident/Incident Report

Houston, Texas 77032
Tuesady, March 18, 1997 13:32 CST

NTSB Narrative Summary Released at Completion of Accident

An uncontained failure of the right engine occurred as the airplane lifted off the runway and began its initial takeoff climb. The airplane returned to the departure airport for a single-engine landing, and emergency crews extinguished a fire confined to the right engine's hot section. The uncontained failure resulted from a fatigue crack in the combustion chamber outer case at the forward drain boss weld. Based on an analysis of fatigue striation measurements, a detectable crack existed at the forward drain boss weld when an on wing ultrasonic inspection of the boss was performed by company maintenance personnel in December 1995.

NTSB Probable Cause Narrative

The failure of company maintenance personnel to perform a proper inspection of the combustion chamber outer case, thus allowing a detectable crack to grow to a length at which the case ruptured.

Event Information

Type of Event Incident
Event Date 3/18/1997
Event Day of the Week Tuesday
Time of Event 1332
Event Time Zone Central Standard Time
Event City HOUSTON
Event State TEXAS
Event Country --
Zipcode of the event site 77032
Event Date Year 1997
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport HOUSTON INTERCONTINENTAL
Event Location Nearest Airport ID IAH
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 98
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1340 Central Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID IAH
Elevation of weather observation facility 98
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 800
Lowest Non-Ceiling Height 500
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 2
Air Temperature at event time (in degrees celsius) 22
Dew Point at event time (in degress fahrenheit) 21
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Variable
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 101
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5022
NTSB Notification Source --
NTSB Notification Date Mar 18 1997 12:00AM
NTSB Notification Time 1430
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:09PM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N12508
NTSB Number FTW97IA128
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Minor
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name McDonnell Douglas
Aircraft Model DC-9-32
Aircraft Series Identifier DC-9-32
Aircraft Serial Number 47797
Certified Max Gross Weight 110000
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 109
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Jan 12 1997 12:00AM
Airframe hours since last inspection 84
Airframe Hours 48243
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name FIRST SECURITY BANK NA TRUSTEE
Aircraft Owner Street Address 79 SOUTH MAIN STREET
Aircraft Owner City SALT LAKE
Aircraft Owner State UT
Aircraft Owner Country
Aircraft Owner Zipcode 84111
Operator is an individual? --
Operator Name CONTINENTAL AIRLINES
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 2929 ALLEN PARKWAY
Operator City HOUSTON
Operator State TX
Operator Country
Operator Zip code 77019
Operator Code CALA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger/Cargo
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code IAH
Departure City
Departure State
Departure Country
Departure Time 1330
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code IND
Destination City INDIANAPOLIS
Destination State IN
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 20 2002 12:42PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 14L
Runway Length 11071
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --