- Date
- May 11, 1985, 17:05 local (22:05 UTC)
- Place
- D/Fw Airport, TX
- Injuries
- 53 uninjured
- Damage
- Minor damage
- Phase of flight
- Initial climb
- Aircraft
- N108DLBoeing B767-232
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Case key
- 21592
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
The B767 was on the takeoff roll. The pressure regulator and shutoff valve coupled with the high presure shutoff valve malfunctioned resulting in pressures being developed in the downstream aircraft ducting in excess of 300 psig. A coupling in the air conditioning pack bay separated allowing the ducting to come apart due to the excess pressure with sufficient force to tear loose duct supports, crack fairing panels, sever both RH engine throttle cables, break actuating linkage for the leading edge slat drive, blow open RH pack bay door and cause a section of ducting containing the center isolation valve to depart from the aircraft. Minor damage occurried to the air craft structure
Aircraft
- Registration
- N108DL
- Reported as
- Boeing B767-232
- Category
- Airplane
- Serial number
- 22220
- Airframe hours
- 6,535
- Engine
- GE CF6-80A, 30,000 lbs thrust, turbo fan
- Damage
- Minor damage
- Flight
- Part 121
- Registered owner
- Delta Airlines Inc.
- Airworthiness certificate
- Standard, Transport
- Departed
- DFW · Dallas Ft.Worth, TX
- Destination
- LGA · New York, NY
- Flight plan
- IFR
- Airport
- DFW · Dfw Airport, runway 17L, 11,387 × 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
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Unknown, Unknown
- Seat
- Left
- Flight hours
- 18,000 total · 1,600 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 15 knots
- Visibility
- 8 statute miles
- Lowest ceiling
- 6,000 ft broken
- Temperature
- 77 °F, dew point 70 °F
- Altimeter
- 29.00 inHg
- Observed at
- DFW