ASN Wikibase Occurrence # 361197
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Monday 4 October 1993 |
| Time: | 18:20 LT |
| Type: |  Boeing 757-232 |
| Owner/operator: | Delta Air Lines |
| Registration: | N638DL |
| MSN: | 23761/177 |
| Year of manufacture: | 1988 |
| Total airframe hrs: | 18266 hours |
| Engine model: | P&W 2037 |
| Fatalities: | Fatalities: 0 / Occupants: 95 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Fort Lauderdale, FL -
 United States of America
|
| Phase: | Take off |
| Nature: | Unknown |
| Departure airport: | (KFLL) |
| Boston, MA (KBOS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
ACCORDING TO THE PILOTS, DURING THE TAKEOFF ROLL, THE AIRPLANE BEGAN TO BOUNCED FORWARD & BACKWARD, & AT ABOUT 128 KTS, THE NOSE PITCHED UP. INFO IN THE FLIGHT DATA RECORDER SHOWED THAT AT 95 KTS, THE ELEVATOR BEGAN A POSITIVE DEFLECTION; AT 108.5 KTS, PITCH ATTITUDE BEGAN TO INCREASE; THEN AT ABOUT 126 KTS, THE PITCH ANGLE REACHED A MAXIMUM VALUE OF 11.25 DEG & THE AIRCRAFT BECAME AIRBORNE. ABOUT 3 SECONDS AFTER INITIAL LIFT-OFF, THE AIRCRAFT TOUCHED DOWN MOMENTARILY. THE CAPTAIN STATED THAT AFTER BECOMING AIRBORNE, HE APPLIED FULL POWER & CONTINUED THE CLIMB. SUSPECTING A POSSIBLE TAIL STRIKE, HE ELECTED TO RETURN TO THE AIRPORT & LAND. A POST-FLIGHT EXAM REVEALED A 6' SCRAPE MARK AFT OF THE PRESSURE BULKHEAD. COMPUTED TAKEOFF SPEEDS FOR THIS FLIGHT WERE: DECISION SPEED (V1) 128 KTS, ROTATION SPEED (VR) 130 KTS, AND TAKEOFF SAFETY SPEED (V2) 135 KTS. THE PREVIOUS FLIGHT'S LIFT-OFF OCCURRED AT 151 KTS & 6.855 DEG NOSE UP PITCH. NO MECHANICAL PROBLEM WAS DISCOVERED WITH THE AIRPLANE.
Probable Cause: FAILURE OF THE CAPTAIN TO USE THE PROPER ROTATION AND LIFT-OFF SPEEDS, WHICH RESULTED IN OVER ROTATION OF THE AIRCRAFT DURING TAKEOFF AND A SUBSEQUENT TAIL SCRAPE.
Accident investigation:
 |
|
Sources:
NTSB ATL94IA001
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 15:50 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation