Narrative:

I worked on aircraft Y and X. Started with aircraft Y, as it needed to be pushed off of gate for additional room for overnight aircraft. Aircraft Y consisted of maintenance: line check to r-hand and l-hand engines, service of thrust reversers and inspection of a stud drilled crack in the diffuser section. Aircraft X overnight maintenance: line check, l-hand and r-hand engine oil strainers. After finishing maintenance on aircraft Y and relocation to remote parking, I worked the engines on aircraft X. Oil strainers were changed first, ran both engines with the assistance of fellow mechanic. After leak checking oil strainers, svced r-hand engine with oil and had technician verify security of oil cap. Proceeded to left engine to service with oil. Closed cowlings and entered oil amounts to logbook. Signed off paperwork in office. After morning flight, the left engine oil quantity read low. Logbook write-up: 'left oil quantity low.' mechanic at destination signed off logbook with entry: 'inspected left engine and found left engine oil cap open. Svced left engine and installed left engine oil cap service to 16 quarts oil cap secured on.'

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Original NASA ASRS Text

Title: A DC9-30 WAS DISPATCHED IN NON COMPLIANCE WITH THE L ENG OIL CAP NOT SECURED. ENG REQUIRED 16 QUARTS TO FILL. ENG NOT SHUT DOWN.

Narrative: I WORKED ON ACFT Y AND X. STARTED WITH ACFT Y, AS IT NEEDED TO BE PUSHED OFF OF GATE FOR ADDITIONAL ROOM FOR OVERNIGHT ACFT. ACFT Y CONSISTED OF MAINT: LINE CHK TO R-HAND AND L-HAND ENGS, SVC OF THRUST REVERSERS AND INSPECTION OF A STUD DRILLED CRACK IN THE DIFFUSER SECTION. ACFT X OVERNIGHT MAINT: LINE CHK, L-HAND AND R-HAND ENG OIL STRAINERS. AFTER FINISHING MAINT ON ACFT Y AND RELOCATION TO REMOTE PARKING, I WORKED THE ENGS ON ACFT X. OIL STRAINERS WERE CHANGED FIRST, RAN BOTH ENGS WITH THE ASSISTANCE OF FELLOW MECH. AFTER LEAK CHKING OIL STRAINERS, SVCED R-HAND ENG WITH OIL AND HAD TECHNICIAN VERIFY SECURITY OF OIL CAP. PROCEEDED TO L ENG TO SVC WITH OIL. CLOSED COWLINGS AND ENTERED OIL AMOUNTS TO LOGBOOK. SIGNED OFF PAPERWORK IN OFFICE. AFTER MORNING FLT, THE L ENG OIL QUANTITY READ LOW. LOGBOOK WRITE-UP: 'L OIL QUANTITY LOW.' MECH AT DEST SIGNED OFF LOGBOOK WITH ENTRY: 'INSPECTED L ENG AND FOUND L ENG OIL CAP OPEN. SVCED L ENG AND INSTALLED L ENG OIL CAP SVC TO 16 QUARTS OIL CAP SECURED ON.'

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.