Narrative:

On dec/xa/99 I flew an MD88 from mke-lax-mke. Prior to my flight, the aircraft had had its #1 engine changed. I received the aircraft from maintenance for a revenue flight. Everything checked out ok on the receiving checklist, except the FMS on the identify page, which indicated that it had 219 engines. I knew that the engines were 217C but there was no way for me to change that on the identify page. So I left it as it was. Apparently, there must have been a mix-up in engineering, as they did not change that particular page to indicate 217C engines instead of 219 engines. The software problem has since been corrected. I was advised by my superiors that this might have been an FMS technical legality problem. Therefore, I felt I should submit this report.

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Original NASA ASRS Text

Title: AN MD88 CAPT ACCEPTS HIS ACFT WITH A NON MEL'ED FMS SYS THAT REFLECTED AN ENG MIX OF 2 DIFFERENT TYPES OF ENGS, AFFECTING THE COMPUTER READOUT FOR CORRECT FMS DATA.

Narrative: ON DEC/XA/99 I FLEW AN MD88 FROM MKE-LAX-MKE. PRIOR TO MY FLT, THE ACFT HAD HAD ITS #1 ENG CHANGED. I RECEIVED THE ACFT FROM MAINT FOR A REVENUE FLT. EVERYTHING CHKED OUT OK ON THE RECEIVING CHKLIST, EXCEPT THE FMS ON THE IDENT PAGE, WHICH INDICATED THAT IT HAD 219 ENGS. I KNEW THAT THE ENGS WERE 217C BUT THERE WAS NO WAY FOR ME TO CHANGE THAT ON THE IDENT PAGE. SO I LEFT IT AS IT WAS. APPARENTLY, THERE MUST HAVE BEEN A MIX-UP IN ENGINEERING, AS THEY DID NOT CHANGE THAT PARTICULAR PAGE TO INDICATE 217C ENGS INSTEAD OF 219 ENGS. THE SOFTWARE PROB HAS SINCE BEEN CORRECTED. I WAS ADVISED BY MY SUPERIORS THAT THIS MIGHT HAVE BEEN AN FMS TECHNICAL LEGALITY PROB. THEREFORE, I FELT I SHOULD SUBMIT THIS RPT.

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.