A B767 had a routine overnight check performed and signed off. Morning preflight check found foreign object damage to 1 fan blade. Check not made from inside fan cowling.

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Attributes
ACN	628190
Time
Date	200408
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance technician : 26
ASRS Report	628190
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other Other
Factors
Maintenance	contributing factor : work cards performance deficiency : scheduled maintenance performance deficiency : inspection
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

On aug/fri/04, preflight foreign object damage was found on aircraft X, engine #2 blade 36, flight was delayed 5 mins (was found in the morning). On aug/thu/04, at about XA00, I was performing the overnight check, an aircraft X's engine #2. I was inspecting the engine inlet area and fan cowl standing in front of the engine. I was also inspecting the fan blades at the same time for any kind of damage. I didn't notice damage to any of the fan blades at the time.

Original NASA ASRS Text

Title: A B767 HAD A ROUTINE OVERNIGHT CHK PERFORMED AND SIGNED OFF. MORNING PREFLT CHK FOUND FOREIGN OBJECT DAMAGE TO 1 FAN BLADE. CHK NOT MADE FROM INSIDE FAN COWLING.

Narrative: ON AUG/FRI/04, PREFLT FOREIGN OBJECT DAMAGE WAS FOUND ON ACFT X, ENG #2 BLADE 36, FLT WAS DELAYED 5 MINS (WAS FOUND IN THE MORNING). ON AUG/THU/04, AT ABOUT XA00, I WAS PERFORMING THE OVERNIGHT CHK, AN ACFT X'S ENG #2. I WAS INSPECTING THE ENG INLET AREA AND FAN COWL STANDING IN FRONT OF THE ENG. I WAS ALSO INSPECTING THE FAN BLADES AT THE SAME TIME FOR ANY KIND OF DAMAGE. I DIDN'T NOTICE DAMAGE TO ANY OF THE FAN BLADES AT THE TIME.

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.