N712DA

Part: BULKHEAD CAP — CRACKED (BS 983)

THE RHS FUSELAGE SKIN WAS FOUND WITH AN APPROX 2 INCH LONG CRACK AT WL 146, JUST FORWARD OF FS 983 AND ABOVE STRINGER 21, THE CRACK EXTENDS HORIZONTALLY THROUGH TWO FASTENER HOLES. ANOTHER 1 INCH LONG CRACK WAS FOUND IN THE HORIZ FLANGE OF THE BULKHEAD CAP, EMANATING HORIZ FWD AND AFT OF THE AFT MOST FASTENER. THE CRACKS ARE THE SUBJECT OF LAC S/B 093-53-273, AND DAL SI 7-69018-12 WHICH MANDATES INSPECTION OF THE LONGERON, SKIN AND CAP.

Part: COALESCER BAGS — DIRTY (CABIN)

ALL AFT CABIN LAV SMOKE DETECTORS WENT OFF AND A STRONG SMELL ENTERED CABIN AFTER TAKE OFF. ALL ENG INSTRUMENTS WERE NORMAL. ALL PACK INDICATIONS WERE NORMAL. RETURNED TO SFO. OVERWEIGHT LANDING PERFORMED BRAKES APPLIED AT 90 KTS TIME 1820Z. A/C WEIGHT 415,000 LBS. PERFORMED VISUAL INSP ALL 3 PACK AREAS, DUCTS IN HYD BAY, APU COMPT, NR 2 ENG AREA. NO DISCREPANCIES FOUND. REPLACED COALESCER BAGS ALL 3 PACKS AS PRECAUTIONARY. RAN ALL ENGS AT IDLE AND MAX PWR PER PFHB, NO ODOR DETECTED IN CABIN. ALL LAV SMOKE DET CHK'D NORMAL DURING ENG RUN. PERFORMED OVERWEIGHT INSP PER MM 5-50-01.

Part: BULKHEAD — CRACKED (BS 1212)

BS 1212 BULKHEAD WAS FOUND CRACKED AT LBL 30 AND RBL 6. THE CRACKS MEASURED 1 AND 8 RESPECTIVELY. DURING REPAIR THE TEE STIFFENER AND THE UPPER CAP WERE MISDRILLED. THE HOLES ARE BUSHED TO FIRST OVERSIZE AND THE RBL 6 LOCATION REQUIRED A CHANGE TO THE DOUBLER PROFILE. INSTALLED DOUBLER.

Part: BREATHER TUBE — BROKEN (NR 2 ENGINE)

NR 2 ENGINE HAD OIL LOST IN CRUISE, FOUND OIL BREATHER TUBE BROKEN ABOVE C1 PUMP.

Part: AOA SENSOR — BROKEN (LEFT)

VIOLENT STICK SHAKER WAS EXPERIENCED IMMEDIATELY AFTER TAKEOFF, ACCOMPANIED BY ATS 1 AND 2 FAIL LIGHTS. FOUND AOA SENSOR BROKEN. REPLACED SAME, TESTS NORMAL.

Part: BATTERY PACK — DISCHARGED (CABIN)

ON LAYOVER CK, FOUND EMERGENCY LIGHTING SYSTEM BATTERY PACK CHARGING LIGHTS FLASHING AT R2 AND L2 DOOR PACKS. REPLACED BOTH BATTERY PACKS, CKS OK PER M/M.

Part: LIGHT — INOPERATIVE (L 2 DOOR)

L2 EXIT DOOR OVERWING SLIDE LIGHT INOP. RELAMPED.

Part: BULKHEAD — CRACKED (FS 1212)

WHILE PERFORMING INSPECTION SI 7-70645-12, THE FS 1212 CANTED BULKHEAD WAS FOUND WITH A 12 INCH LONG VERTICAL CRACK AT RBL 22.5. THE SUBJECT WEB IS M/F .050 7075 T6 CLAD SHEET. ACCOMPLISHED REPAIRS PER DL ERA 273152-14.

Part: GEAR SELECTOR — FAILED (FLT DECK)

AFTER TAKOFF, UPON MOVING LDG GEAR HANDLE TO NEUTRAL GOT GEAR IN TRANSIT LIGHT ALONG WITH TAIL SKID AND DOORS. RETURNED, FERRIED AC TO ATL. REPLACED C/P LANDING GEAR CONTROL, SWUNG GEAR AND OPERATION NORMAL.

Part: CONTROLLER — MALFUNCTIONED (NR 2 PACK)

AFTER T/O, SMOKE WAS DETECTED IN AFT LAV AND SMOKE DET WENT OFF. CABIN FILLED WITH SMOKE. PER CK LIST EVENTUALLY NR 2 PACK OVHT LIGHT CAME ON. UNLATCHED PACK, SMOKE STARTED TO CLEAR. REPLACED NR 2 PACK TEMP CONT, RAN ALL ENG TO T/O PWR WITH ALL THREE PACKS, NO SMOKE. NR 2 PACK CKS OK.

Part: BLKHD WEB — CRACKED (FS 1363)

DURING INSPECTION PER DAL S.I. 7-69959-12AD PART 1, THE SUBJECT AIRCRAFT WAS FOUND WITH A CRACK IN THE FUSELAGE FS 1363 BULKHEAD WEB. FURTHER INSPECTION REVEALED A SMALL CRACK AT A FASTENER HOLE LOCATED APPROXIMATELY .4 INCH ABOVE THE WEB CRACK. ACCOMPLISHED REPAIRS PER DL ERA 271982-14.

Part: GEAR BOX — DAMAGED (NR 2 ENGINE)

NR 2 ENG OIL FILTER PRESS LITE CAME ON. ON FINAL POWER, IDLE LITE WENT OUT, CAME ON AGAIN. ENGINE SHUT DOWN PER POR. FOUND METAL ON MAIN AND GEAR BOX CHIP DETECTORS, ALSO ON SCAVENGE FILTER. FOUND DAMAGED STEP-SIDE GEAR BOX DPN 727703930 S/N A985. EXTERNAL GEAR BOX DPN 727003020 S/N AM373 WAS ALSO REPLACED.

Part: EEL PWR SUPPLY — FAILED (CABIN)

ON FINAL APPROACH, EMERGENCY LIGHTS CAME ON, WILL NOT RESET. FOUND FLIGHT COMPARTMENT EMERGENCY LIGHT POWER PACK (L1) STUCK IN ON POSITION. REPLACED PACK OPERATION NORMAL.

Part: FRAMES — CRACKED (FUSELAGE)

DURING SPECIAL INSPECTION, CRACKS WERE FOUND IN MAIN FUSELAGE FRAMES AT RIGHT SIDE FS 569, 649, 669, 689, 769, 1625, 1685, 1705. LEFT SIDE AT FS 1023, 1063, 1343, 1665, 1705. ALL CRACKS WERE AT WL 280. THESE CRACKS WERE FOUND AS A RESULT OF A SPECIAL INSPECTION FOR AIRCRAFT WITH 22,000 CYCLES AND HIGHER. THIS IS THE FIRST TIME CRACKS WERE FOUND AT THESE LOCATIONS ON DL AIRCRAFT.

Part: DOOR — CRACK (LT MLG STRUT)

LEFT MLG STRUT DOOR LOWER DOOR, CRACKED AT LOWER AFT SIDE. REPAIRED PER SRM 52-81-00 PG 811, FOUND AT LETTER CHECK.

Part: STRINGER — CRACKED (STR 29 STA 1625)

STR 29 CRACKED OUT OF DRAIN HOLE UNDER SPLICE DOUBLER BETWEEN STA 1625-1645, FOUND DURING LETTER CHECK. REMOVED CRACKED SECTION AND FABRICATED NEW STRG SECTION AND SPLICE DOUBLERS AS PER SRM 53-13-00 FIG 804. OK TO INSTALL STRINGER REPLACEMENT. INSTALLED STRINGER AND SPLICE DOUBLERS.

Part: COWL DOUBLER — LOOSE (NR 2 ENGINE)

FLUSH PATCH REPAIR COMING LOOSE ON OUTER SKIN OF TRANSLATING COWL AT 4 O'CLOCK POSITION. ON NR 2 ENGINE. FOUND AT LETTER CHECK, REPAIRED PER SRM 54-37-00 FIG 802.

Part: FAIRING — CRACKED (RT STABILIZER)

ON CLIMB-OUT, HEARD UNUSUAL RUMBLE AS AIRCRAFT ACCELERATED, RUMBLE INCREASED WITH SPEED. FOUND RIGHT LOWER STAB TO FUSELAGE FAIRING LEADING EDGE UNFAIRED WITH SUBSTRUCTURE CRACKED. REPLACED FAIRING PER MM 55-16-00.