# Accident 19960706016239A: Doug MD88, Pensacola, FL, July 6, 1996

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 6, 1996, 14:24 local time
- Place: Pensacola, FL
- Airport: Pensacola Regional Airport
- Damage: Substantial damage
- Phase of flight: To Aborted (Fixed Wing)
- Operating rules: Air carrier (Part 121)
- Operator: DALA
- Location: 30.4705° N, 87.1905° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=30.4705&lon=-87.1905&mi=10
- Aircraft: N927DA, a cancelled registration (https://openairdocs.org/deregistered/N927DA-2019-04-08) (OpenAirDocs)
- Registry model: Mcdonnell Douglas MD-88 (registry code 3023688, https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Registry engine: Pratt & Whitney JT8D series (registry code 52053, https://openairdocs.org/engine/pratt-whitney-jt8d-series) (OpenAirDocs)
- Reported make and model: DOUG MD88
- Reported engine: PWA JT8D219
- People aboard: 137
- Fatal injuries: 2
- Pilot flight hours: 12,000 total
- NTSB investigation: [NTSB DCA96MA068](https://openairdocs.org/ntsb/DCA96MA068) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19960706016239A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

DURING TEH INITIAL PART OF ITS TAKEOFF ROLL, THE AIRPLANE EXPERIENCED AN ENGINE FAILURE. UNCONTAINED ENGINE DEGRIS FROM THE FRONT COMPRESSOR FRONT HUB (FAN HUB) OF TEH #1 (LEFT) ENGINE PENETRATED THE LEFT FUSELAGE. TWO PASSENGERS WERE KILLED AND TWO OTHERS WERE SERIOUSLY INJURED. THE TAKEOFF WAS REJECTED, AND THE AIRPLANE WAS STOPPED ON THE RUNWAY. THE FAN HUB HAD FRACTURED THROUGH A TIEROD HOLE AND BLADE SLOT. SOME FORM OF DRILL BREAKAGE OR DRILL BREAKDOWN, COMBINED WITH LOCALIZED LOSS OF COOLANT AND CHIP PACKING, HAD OCCURRED DURING THE DRILLING PROCESS, CREATING AN ALTERED MICROSTRUTURE AND LADDER CRACKING IN THE FAN HUB. DRILLING DAMAGE EXTENDED MULCH DEEPER INTO HOLE SIDEWALL MATERIAL THAN PREVIOUSLY ANTICIPATED BY P & W. FATIGUE CRACKS INITIATED FROM THE LADDER CRACKING IN THE TIEROD HOLE AND BEGAN PROPAGATING ALMOST IMMEDIATELY AFTER THE HUB WAS PUT INTO SERVICE IN 1990. THE CRACK WAS LARGE ENOUGH TO HAVE BEEN DETECTABLE DURING THE LAST FLOURESCENT PENETRANT INSPECTION AT DELTA. DELTAS NONDETECTION OF THE CRACK WAS CAUSED EITHER BY A FAILURE OF THE CLEAING AND FLORESCENT PENETRANT INSPECTION PROCESSING, A FAILURE OF THE INSPECTOR TO DETECT THE CRACK, OR SOME COMBINATION OF  THESE FACTORS.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB DCA96MA068](https://openairdocs.org/ntsb/DCA96MA068), Jul 6, 1996: McDonnell Douglas MD-88 (N927DA), Pensacola, FL, substantial damage, 2 fatal. Probable cause: the fracture of the left engine's front compressor fan hub, which resulted from the failure of Delta Air Lines' fluorescent penetrant inspection process to detect a detectable fatigue crack…

## Other reports on N927DA (2)

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

- [Incident 19971019041719I](https://openairdocs.org/incident/19971019041719I), Oct 19, 1997: Doug MD88 (N927DA), Cleveland, OH. Narrative: on October 19, 1997, at approximately 1703 EDT, delta 935 crossed the runway 23L hold short line contrary to cle-atct instructions. There was no…
- [Incident 19920110003579I](https://openairdocs.org/incident/19920110003579I), Jan 10, 1992: Doug MD88 (N927DA), Kansas City, MO. NR1 engine oil pressure low. Shut down and landed at destination. Oil pressure line cracked.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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