DC10 crew had engine cowling depart aircraft after becoming airborne.

Attributes
ACN	524596
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
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial climbout : takeoff
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 90 flight time total : 9000 flight time type : 3000
ASRS Report	524596
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper maintenance non adherence : far non adherence : company policies non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued alert controller : provided flight assist controller : issued new clearance flight crew : diverted to another airport flight crew : landed in emergency condition flight crew : declared emergency none taken : detected after the fact other
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : inspection performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Aircraft Company Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

Immediately after takeoff the local controller informed us that 'part of the #1 engine cover fell off the airplane.' the only cockpit indication was a zero egt reading of #1 engine. We elected to remain in the local pattern and return to land. We dumped approximately 40 thousand ibs of fuel (to landing west) and received radar vectors for a visual approach to runway 5L at ZZZ. After normal landing and roll out we shutdown the #1 engine as a precaution. Crash and rescue crew met the aircraft on a taxiway to inspect for damage, confirmed part of engine had departed the aircraft but no fire. Taxiway to gate uneventfully.

Original NASA ASRS Text

Title: DC10 CREW HAD ENGINE COWLING DEPART ACFT AFTER BECOMING AIRBORNE.

Narrative: IMMEDIATELY AFTER TKOF THE LOCAL CTLR INFORMED US THAT 'PART OF THE #1 ENG COVER FELL OFF THE AIRPLANE.' THE ONLY COCKPIT INDICATION WAS A ZERO EGT READING OF #1 ENG. WE ELECTED TO REMAIN IN THE LOCAL PATTERN AND RETURN TO LAND. WE DUMPED APPROX 40 THOUSAND IBS OF FUEL (TO LANDING W) AND RECEIVED RADAR VECTORS FOR A VISUAL APCH TO RWY 5L AT ZZZ. AFTER NORMAL LANDING AND ROLL OUT WE SHUTDOWN THE #1 ENG AS A PRECAUTION. CRASH AND RESCUE CREW MET THE ACFT ON A TXWY TO INSPECT FOR DAMAGE, CONFIRMED PART OF ENG HAD DEPARTED THE ACFT BUT NO FIRE. TXWY TO GATE UNEVENTFULLY.

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.