Narrative:

We were on a training flight. After several touch and goes, the last landing was firm, but not hard. We proceeded to the ramp area and shut down. After shutdown, I noticed fuel was leaking from the right engine. Since the engine was hot, we called the crash truck to prevent any fire. The gascolator bowl came loose. We reinstalled the bowl. Later on, we noticed there was some wrinkled skin on the aircraft. Upon further inspection, we found 5 rivets that had previously been popped (because you could tell they had been rubbing). I had the student preflight it because I was on another flight. I firmly believe that the aircraft was already damaged or weakened from previous training. The aircraft was just 50 hours out of an annual, but we were having a lot of trouble with it. The mechanics may have let something go or not have caught it. The owner was notified that evening. No accident/incident report was filed immediately afterward because it was just some wrinkled skin. Being an meii for 2 yrs, I feel very strongly that the aircraft was already damaged or weakened because the landing wasn't a hard landing. Being the instructor, I should have preflted the aircraft. The rippled skin could have already been there and we just took the blame.

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Original NASA ASRS Text

Title: ACFT DAMAGED DURING LNDG PRACTICE.

Narrative: WE WERE ON A TRAINING FLT. AFTER SEVERAL TOUCH AND GOES, THE LAST LNDG WAS FIRM, BUT NOT HARD. WE PROCEEDED TO THE RAMP AREA AND SHUT DOWN. AFTER SHUTDOWN, I NOTICED FUEL WAS LEAKING FROM THE R ENG. SINCE THE ENG WAS HOT, WE CALLED THE CRASH TRUCK TO PREVENT ANY FIRE. THE GASCOLATOR BOWL CAME LOOSE. WE REINSTALLED THE BOWL. LATER ON, WE NOTICED THERE WAS SOME WRINKLED SKIN ON THE ACFT. UPON FURTHER INSPECTION, WE FOUND 5 RIVETS THAT HAD PREVIOUSLY BEEN POPPED (BECAUSE YOU COULD TELL THEY HAD BEEN RUBBING). I HAD THE STUDENT PREFLT IT BECAUSE I WAS ON ANOTHER FLT. I FIRMLY BELIEVE THAT THE ACFT WAS ALREADY DAMAGED OR WEAKENED FROM PREVIOUS TRAINING. THE ACFT WAS JUST 50 HRS OUT OF AN ANNUAL, BUT WE WERE HAVING A LOT OF TROUBLE WITH IT. THE MECHS MAY HAVE LET SOMETHING GO OR NOT HAVE CAUGHT IT. THE OWNER WAS NOTIFIED THAT EVENING. NO ACCIDENT/INCIDENT RPT WAS FILED IMMEDIATELY AFTERWARD BECAUSE IT WAS JUST SOME WRINKLED SKIN. BEING AN MEII FOR 2 YRS, I FEEL VERY STRONGLY THAT THE ACFT WAS ALREADY DAMAGED OR WEAKENED BECAUSE THE LNDG WASN'T A HARD LNDG. BEING THE INSTRUCTOR, I SHOULD HAVE PREFLTED THE ACFT. THE RIPPLED SKIN COULD HAVE ALREADY BEEN THERE AND WE JUST TOOK THE BLAME.

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.