A dhc-8-400 was dispatched with the oil service cap not installed on #2 engine.

Attributes
ACN	695227
Time
Date	200604
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Dash 8-400
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance lead technician : 0.75 maintenance technician : 4
ASRS Report	695227
Person 2
Affiliation	company : air carrier
Function	instruction : trainee maintenance : technician
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper maintenance non adherence : company policies non adherence : published procedure non adherence : far
Independent Detector	other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : inspection performance deficiency : non compliance with legal requirements performance deficiency : installation
Supplementary
Problem Areas	Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

I was informed that I had left an oil servicing cap off of the right hand engine of aircraft X which was in for a daily check out on the night of apr/sun/06. I'm not sure (haven't been told) how many legs the aircraft flew. My supervisor told me on apr/fri/06 on a post flight walkaround the crew/mechanics noticed excessive oil on the right hand cowl drain area. I believe that I might have left it off (the oil cap) by accident; and due to also training a new mechanic at the gate (mind on too many things at once). The aircraft suffered no major delay at the gate turnaround; no injuries occurred. I realize I was the only person that could have left the oil cap off. Due to this I have taken steps to change my actions during inspection and servicing of all aircraft; including slowing down; post servicing close-up check of service ports and caps; and keeping my mind on the job at hand.

Original NASA ASRS Text

Title: A DHC-8-400 WAS DISPATCHED WITH THE OIL SERVICE CAP NOT INSTALLED ON #2 ENGINE.

Narrative: I WAS INFORMED THAT I HAD LEFT AN OIL SERVICING CAP OFF OF THE RIGHT HAND ENG OF ACFT X WHICH WAS IN FOR A DAILY CHECK OUT ON THE NIGHT OF APR/SUN/06. I'M NOT SURE (HAVEN'T BEEN TOLD) HOW MANY LEGS THE ACFT FLEW. MY SUPVR TOLD ME ON APR/FRI/06 ON A POST FLT WALKAROUND THE CREW/MECHS NOTICED EXCESSIVE OIL ON THE RIGHT HAND COWL DRAIN AREA. I BELIEVE THAT I MIGHT HAVE LEFT IT OFF (THE OIL CAP) BY ACCIDENT; AND DUE TO ALSO TRAINING A NEW MECH AT THE GATE (MIND ON TOO MANY THINGS AT ONCE). THE ACFT SUFFERED NO MAJOR DELAY AT THE GATE TURNAROUND; NO INJURIES OCCURRED. I REALIZE I WAS THE ONLY PERSON THAT COULD HAVE LEFT THE OIL CAP OFF. DUE TO THIS I HAVE TAKEN STEPS TO CHANGE MY ACTIONS DURING INSPECTION AND SERVICING OF ALL ACFT; INCLUDING SLOWING DOWN; POST SERVICING CLOSE-UP CHECK OF SERVICE PORTS AND CAPS; AND KEEPING MY MIND ON THE JOB AT HAND.

Data retrieved from NASA's ASRS site as of January 2009 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.