FLC TECHNIQUE PREFLT PROC AND LOGBOOK REVIEW INADEQUATE DURING AIRMAN FLT CHK ACTIVITY. ACFT EQUIP PROB MISSED.

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FLT LBB-IAH. INSTRUCTOR/CHK PLT GIVING A CURRENCY/LINE CHK TO A CAPT. CHK PLT GETS THE PAPERWORK AND PERFORMS A WALK AROUND INSPECTION WHILE CAPT DOES THE INTERIOR PREFLT CHKS. WHEN I ARRIVED IN THE COCKPIT THE CAPT STATED THAT THE ACFT HAD BEEN USED FOR A PLT TRAINER THE NIGHT BEFORE AND 6 LNDGS WERE LOGGED IN THE LOGBOOK; BUT NO MAINT WRITE-UPS. I REMARKED THAT IT WAS UNUSUAL FOR THE GPWS TO NOT BE WRITTEN UP AS NORMALLY A SINGLE ENG APCH IS ACCOMPLISHED AND REQUIRES THE GPWS TO BE IN OFF. I LOOKED AT THE GPWS CAPPED SWITCH AND IT APPEARED TO BE SAFTIED. TESTED GPWS OK. WE READ THE RECEIVE ACFT CHKLIST AND COMMENCED A NORMAL BEFORE START CHKLIST. AFTER ENGS WERE STARTED; #1 GENERATOR WOULD NOT COME ON LINE. CALLED OPS AND REDISPATCHED WITH GENERATOR #1 INOP AND APU ON LINE FOR BUS #1. CLBING THROUGH FL300 (DUE TO ROUGH RIDE AT LOWER ALT) APU FLAMED OUT. NOW SINGLE GENERATOR OP; LNDG AND TAXI IN AT IAH UNEVENTFUL. OPENING THE ACFT MAINT LOG FOR MY WRITE-UPS I FOUND THAT AN OPEN WRITE-UP SAYING THAT THE GPWS SAFETY WIRE NEEDED TO BE RESAFETIED. TALKING TO MAINT THE #1 CSD HAD BEEN CYCLED TO DISCONNECT. APU HAD OVERSPD AND MAINT PERSONNEL ADVISED THAT THE APU SHOULD NOT BE USED ABOVE FL250. NO PLACARDS ON LOGBOOK OR IN ACFT WERE FOUND. SECTION #1 -- LIMITATIONS OF FLT MANUAL STATES FL350 OR AS PLACARD (ASSUMING SOME ACFT TO GO TO FL370). HOWEVER; IN LOWER PORTION OF DISPATCH RELEASE FOUND INFO NOTE STATING APU MAX OPERATING ALT FL250. POOR HEADWORK AND PLANNING ON MY PART; ASSUMING STANDARD ACFT OPS WITH NO MEL PLACARDS SHOWING; MISSED THE INFO PLACARD ON APU. SO DID DISPATCH. POOR COMS TO FLC. DIFFERENCES IN FLT MANUAL/GND TRAINING AND ACTUAL ACFT. POOR HEADWORK ON MY PARK ASSUMING THAT THE LOGBOOK WAS CLR OF WRITE-UPS FROM THE CAPT THAT I WAS CHKING. THOUGHT THAT SHE COULD DO THE STANDARD LOW STRESS REQUIREMENTS ALONE WITHOUT BACKUP. NEVER; NEVER ASSUME ANYTHING.