A B757-200 WAS OPERATED IN NON COMPLIANCE WITH A #2 ENG OVERTEMP ON START BUT NOT RPTED UNTIL AFTER DEP.

Narrative

OUR ACFT WAS DISPATCHED TO LAS WITH AN INOP (FOR PNEUMATICS) APU. THE PRESSURE ALT AT LAS WAS 2100 FT AND THE OUTSIDE AIR TEMP WAS 41 DEGS C (105 DEGS F) AND FORECAST TO BE 43 DEG C (109 DEGS F). ALTHOUGH THE EXTERNAL PWR; AIR; AND AIR CONDITIONING IN LAS WAS NORMAL; THE EXTERIOR AIR OUTPUT WAS INSUFFICIENT FOR THAT RECOMMENDED FOR A SUCCESSFUL AIR START OF AN ENG (DUE TO TEMP AND PA COMBINATION AT LAS). OUR FIRST ATTEMPT AT STARTING THE R ENG RESULTED IN A HUNG START. COMPANY OPS MANUAL PROCS WERE FOLLOWED AND A SECOND ATTEMPT WAS MADE RESULTING IN A SUCCESSFUL START; BUT OVERTEMPING BY 3 DEGS C FOR 2 SECONDS. AS IDLE SPD WAS APCHED (NOTE: THE R ENG REMAINED WITHIN ALL LIMITS FOR THE REMAINDER OF THE FLT); THE CABIN TEMP WAS GETTING DANGEROUSLY HIGH AT THIS POINT; SO IN THE INTEREST OF SAFETY AND PAX COMFORT; I DECIDED THAT GETTING AIRBORNE QUICKLY WOULD BE IN EVERYONE'S BEST INTEREST AS THAT WOULD BE THE MOST EXPEDIENT WAY OF COOLING THE CABIN TO SAFER LEVELS. WE SHOULD HAVE COORDINATED WITH MAINT CTL PRIOR TO TKOF FOR DEFERRAL OF THE ENG WRITE-UPS TO OUR DEST (MSP). THIS OMISSION WAS INADVERTENT. WE DID WRITE UP THE PROBS ENRTE AND INFORMED MAINT VIA ACARS.