E145 crew had the engine oil access door come open in-flight.

Attributes
ACN	569208
Time
Date	200212
Day	Mon
Place
Locale Reference	airport : zzz.airport
State Reference	ME
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
ASRS Report	569208
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	569210
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa other flight crewb other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

I performed a normal preflight for an originating aircraft and didn't see any problems. All hatches were secure. During climb out of ZZZ, I felt a thump. It seemed like the flight attendant had banged a galley cart against the bulkhead. As I was thinking about what I had felt, the flight attendant called the cockpit and asked if we had felt the thump on the aircraft. I agreed that I had felt it -- but the captain didn't seem to notice what we had felt. There were no cockpit indications of anything wrong with the aircraft. I disconnected the autoplt and hand flew the aircraft to ensure nothing wrong with the flight controls. We continued the flight to bos without incident. During postflt inspection, I discovered what must have been the source of the thump. The oil access door had come open in-flight and seemed to be bent back. I then informed the captain, and he called maintenance. No other defects were observed.

Original NASA ASRS Text

Title: E145 CREW HAD THE ENG OIL ACCESS DOOR COME OPEN INFLT.

Narrative: I PERFORMED A NORMAL PREFLT FOR AN ORIGINATING ACFT AND DIDN'T SEE ANY PROBS. ALL HATCHES WERE SECURE. DURING CLB OUT OF ZZZ, I FELT A THUMP. IT SEEMED LIKE THE FLT ATTENDANT HAD BANGED A GALLEY CART AGAINST THE BULKHEAD. AS I WAS THINKING ABOUT WHAT I HAD FELT, THE FLT ATTENDANT CALLED THE COCKPIT AND ASKED IF WE HAD FELT THE THUMP ON THE ACFT. I AGREED THAT I HAD FELT IT -- BUT THE CAPT DIDN'T SEEM TO NOTICE WHAT WE HAD FELT. THERE WERE NO COCKPIT INDICATIONS OF ANYTHING WRONG WITH THE ACFT. I DISCONNECTED THE AUTOPLT AND HAND FLEW THE ACFT TO ENSURE NOTHING WRONG WITH THE FLT CTLS. WE CONTINUED THE FLT TO BOS WITHOUT INCIDENT. DURING POSTFLT INSPECTION, I DISCOVERED WHAT MUST HAVE BEEN THE SOURCE OF THE THUMP. THE OIL ACCESS DOOR HAD COME OPEN INFLT AND SEEMED TO BE BENT BACK. I THEN INFORMED THE CAPT, AND HE CALLED MAINT. NO OTHER DEFECTS WERE OBSERVED.

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.