A DC10 cargo liner on climb out declared an emergency and returned to departure airport due to loss ...

Attributes
ACN	526040
Time
Date	200109
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	DC-10 10
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : commercial pilot : flight engineer pilot : multi engine pilot : atp pilot : instrument
ASRS Report	526040
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : provided flight assist flight crew : declared emergency flight crew : diverted to another airport
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Maintenance Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Immediately after takeoff, local controller informed us that part of the #1 engine cover fell off the aircraft. Only cockpit indication was a 'zero' egt reading on the #1 engine. We elected to remain in the local pattern and return to land. We dumped approximately 40000 pounds of fuel to get to landing weight, running the fuel dump checklist. We received radar vectors for a visual approach to the runway. After a normal landing and rollout, we cleared the runway and shut down the #1 engine as a precaution. Crash, fire, and rescue department met the aircraft on taxiway right to inspect for damage. Crash, fire, and rescue confirmed part of the engine had departed the aircraft, but no fire. We taxied to the gate and shut down uneventfully. Callback conversation with reporter revealed the following information: the reporter stated the airplane was a DC10 cargo liner and just after liftoff the tower alerted the crew that a part of #1 engine fell off. The reporter said the only indication of something wrong with #1 engine was the indicator went to zero. The reporter said an emergency was declared, fuel was dumped and a return to the field was made immediately. The reporter stated that on the ground it was discovered the #1 engine inboard fan cowling was missing. The reporter said one leading edge slat and the inboard aileron had incurred damage. The reporter said on the preflight walkaround inspection all cowling latches on #1 and #3 engines appeared latched. The reporter stated no determination has been made on the cause of the cowling departing the aircraft.

Original NASA ASRS Text

Title: A DC10 CARGO LINER ON CLBOUT DECLARED AN EMER AND RETURNED TO DEP ARPT DUE TO LOSS OF #1 ENG FAN COWLING. CAUSE UNDER INVESTIGATION.

Narrative: IMMEDIATELY AFTER TKOF, LCL CTLR INFORMED US THAT PART OF THE #1 ENG COVER FELL OFF THE ACFT. ONLY COCKPIT INDICATION WAS A 'ZERO' EGT READING ON THE #1 ENG. WE ELECTED TO REMAIN IN THE LCL PATTERN AND RETURN TO LAND. WE DUMPED APPROX 40000 LBS OF FUEL TO GET TO LNDG WT, RUNNING THE FUEL DUMP CHKLIST. WE RECEIVED RADAR VECTORS FOR A VISUAL APCH TO THE RWY. AFTER A NORMAL LNDG AND ROLLOUT, WE CLRED THE RWY AND SHUT DOWN THE #1 ENG AS A PRECAUTION. CRASH, FIRE, AND RESCUE DEPT MET THE ACFT ON TXWY R TO INSPECT FOR DAMAGE. CRASH, FIRE, AND RESCUE CONFIRMED PART OF THE ENG HAD DEPARTED THE ACFT, BUT NO FIRE. WE TAXIED TO THE GATE AND SHUT DOWN UNEVENTFULLY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE AIRPLANE WAS A DC10 CARGO LINER AND JUST AFTER LIFTOFF THE TWR ALERTED THE CREW THAT A PART OF #1 ENG FELL OFF. THE RPTR SAID THE ONLY INDICATION OF SOMETHING WRONG WITH #1 ENG WAS THE INDICATOR WENT TO ZERO. THE RPTR SAID AN EMER WAS DECLARED, FUEL WAS DUMPED AND A RETURN TO THE FIELD WAS MADE IMMEDIATELY. THE RPTR STATED THAT ON THE GND IT WAS DISCOVERED THE #1 ENG INBOARD FAN COWLING WAS MISSING. THE RPTR SAID ONE LEADING EDGE SLAT AND THE INBOARD AILERON HAD INCURRED DAMAGE. THE RPTR SAID ON THE PREFLT WALKAROUND INSPECTION ALL COWLING LATCHES ON #1 AND #3 ENGS APPEARED LATCHED. THE RPTR STATED NO DETERMINATION HAS BEEN MADE ON THE CAUSE OF THE COWLING DEPARTING THE ACFT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

A DC10 cargo liner on climb out declared an emergency and returned to departure airport due to loss of #1 engine fan cowling. Cause under investigation.