Narrative:

Clearance to cross hayed at FL180. At level off reclred to 17000 ft and given frequency change. Prior to leveling at 17000 ft received an RA on TCASII received an altitude alert at 16800 ft and climbed to 17000 ft. Controller questioned us when level at 17000 ft. The autoplt did not go to altitude hold due to an unknown reason.

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Original NASA ASRS Text

Title: SUPER MD80 CLRED TO CROSS HAYED FL180. AT LEVEL OFF RECLRED TO 17000 FT. IN DSCNT GOT TCASII RA. GOT ALT ALERT AT 16800 FT. CTLR QUESTIONED WHEN LEVEL 17000 FT. AUTOPLT FAILED TO GO TO ALT HOLD AT 17000 FT.

Narrative: CLRNC TO CROSS HAYED AT FL180. AT LEVEL OFF RECLRED TO 17000 FT AND GIVEN FREQ CHANGE. PRIOR TO LEVELING AT 17000 FT RECEIVED AN RA ON TCASII RECEIVED AN ALT ALERT AT 16800 FT AND CLBED TO 17000 FT. CTLR QUESTIONED US WHEN LEVEL AT 17000 FT. THE AUTOPLT DID NOT GO TO ALT HOLD DUE TO AN UNKNOWN REASON.

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.