N993Z

Part: WIRE — WORN (CABIN)

STL - 698 - DURING OVERNIGHT MAINTENANCE, THE FLOOR EMERGENCY EGRESS LIGHTS WERE FOUND TO BE INOPERATIVE FROM ROW 22 TO 24. REPLACED THE FEED CABLE FROM THE BATTERY PACK TERMINAL STRIP TO FLEX CABLE. (M)

Part: LONGERON — CRACKED (BS 756)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LONGERON 23R CRACKED AT FORWARD END, STA 756. REPLACED LONGERON SECTION PER SRM 53-02, FIGURE 18. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: SKIN — DENTED (BS 607)

MCI - DURING OP16 MAINTENANCE CHECK, FOUND BULGES IN SKIN AT STATION 607, LONGERON 26L TO 26R. INSTALLED NEW SKIN PANEL PER SRM 51-01 PAGE 1 PARA C. (M)

Part: SPAR — CRACKED (RT WING)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND CRACK INDICATION IN RT WING REAR SPAR AT INBD FLAP HINGE CASTING LOWER INBOARD HOLE. REPAIRED PER DOUGLAS DRAWING JO60271. (M)

Part: TIE — CRACKED (BS 660)

MDCI - DURING OP 16 MAINTENANCE CHECK, FOUND FUSELAGE LONGERON 29R SUPPORT CLIP CRACKED AT STA 660. INSTALLED NEW SUPPORT CLIP AT STA 660, LONGERON 29R PER SRM 51-01, PARA C, PG 1. (X)

Part: BULKHEAD SUPPORT — CRACKED (BS 579)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND SUPPORT BRACKET ON AFT PRESSURE BULKHEAD AFT OF 24 RL CRACKED AT STA 579. REPLACED CRACKED ANGLE PER SRM 51-00. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: LONGERON — CORRODED (BS 630-680)

MCI - DURING OP 16 MAINTENANCE CHECK FOUND CORRODED LONGITUDINAL STIFFENER AT STA 630 TO STA TO 680 BETWEEN L29R AND L30R. REPLACED HAT SECTION STIFFENER PER SRM 51-01, PAGE 1. (X)

Part: TIE — CRACKED (BS 585)

MCI - DURING OP 16 MAINTENANCE CHECK FOUND STR 25R TIE CRACKED AT STA 585. REPLACED LONGERON FITTING PER SRM 51-01, PAGE 1 ITEM C. (X)

Part: SPLICE — CRACKED (BS 800)

MCI - DURING OP 26 MAINTENANCE CHECK, FOUND LONGERON 30 SPLICE FITTING CRACKED AT STA 800. REPLACED FITTING PER SRM 51-01, PG 1, ITEM C. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: TIE — CRACKED (BS 585)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND R29 STR TIE CRACKED AT STA 585. REPLACED STRINGER TIE PER SRM 53-01, PAGE 1 PARA C. (X)

Part: SKIN — CORRODED (BS 607)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND BULGES IN THE LOWER FUSELAGE SKIN AT STA 607 STR 29L TO STR 29R. INSTALLED NEW SKIN PANEL PER SRM 51-01 PG 1 PARA C. (X)

Part: SPLICE — CRACKED (BS 848)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LONGERON 29L SPLICE FITTING AT STA 848 CRACKED. REPLACED LONGERON SPLICE PER SRM 51-01, PAGE 1, ITEM C, AND STD PRACTICES. (X)

Part: LONGERON — CRACKED (BS 604)

MCI - DURING OP 15 MAINTENANCE CHECK FOUND FUSELAGE LONGERON 28R CRACKED AT STA 604. REPLACED LONGERON FITTING PER SRM 51-01, PAGE 1, PARA C. (X)

Part: WEB — CRACKED (BS 145-159)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND HOLE IN MEMBRANE BELOW FLOOR AT FS 157, RBL 3, AND HAD CRACKS AND CORROSION FROM STA 145 TO STA 159, RBL 12 TO LBL 6 INCHES. REMOVED DAMAGED AREA OF FLOOR AND REPLACED WITH NEW FLOOR PER SRM 53-01, PAGE 18, FIGURE 4 SHEET 3. (X)

Part: ANGLE — CORRODED (FUSELAGE)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND AFT FUSELAGE RT FUSELAGE TO VERTICAL FIN, LE ATTACH ANGLE CRACKED AT UPPER ROW OF FASTENERS AT MIDDLE. REPLACED ATTACH ANGLE PER SRM 51-01, PAGE 1 ITEM C. (X)

Part: TIE — CRACKED (BS 996)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND A CRACK AT FLOOR BEAM TO LONGERON TIE AT STA 996, L18R. INSTALLED REPAIR AT STA 996, L18R, PER SRM 53-03. (X)

Part: FRAME — CRACKED (PAX DOORWAY)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND 4 INCH CRACK IN LT FORWARD PASSENGER DOOR OUTER DOOR FRAME, AFT EDGE AT DOOR HOLD OPEN HOOK. INSTALLED NEW SECTION OF PAN PER SRM 51-00, USING SPP. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: SUPPORT — CRACKED (BS 832)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND FLOOR SUPPORT CRACK AT STA 832, LONGERON 30. WELDED CRACK IN FLOOR SUPPORT FLANGE PER DOUGLAS PROCESS SPEC 101301. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: TIE — CRACKED (BS 996)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND FLOORBEAM TO SKIN TIE CRACKED BELOW LONGERON 18R, STA 996. REPLACED SKIN TIE PER SRM 51-01, PAGE 1 ITEM C. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: TIE — CRACKED (BS 585)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND R24 STRINGER TIE CRACKED AT STA 585. INSTALLED NEW STR TIE PER SRM 51-01, PAGE1 PARA C. (X)

Part: ANGLE — CRACKED (VERT STAB)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND VERTICAL FIN TO FUSELAGE ATTACH ANGLE CRACKED JUST FORWARD OF LEFT FIN ACCESS PLATE, AT DORSAL FIN FITTING AREA. REMOVED AND REPLACED ANGLE PER SRM 51-01 PAGE 1 ITEM C. (M)

Part: SKIN — CRACKED (BS 214)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND 2 INCH DENT IN SKIN AT STATION 214, LONG 4L. HIGH FREQ EDDY CURRENT VERIFIED CRACK IN SKIN. REPAIRED PER SRM 53-04 FIG 38. (M)

Part: FLOORBEAM — CRACKED (BS 996)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND A CRACK AT FLOORBEAM TO LONGERON TIE AT STATION 996, LONGERON 18R. INSTALLED REPAIR AT STATION 996, LONGER 18R PER DC9 SRM 53-03. (M)

Part: FLANGE — WORN (RT APU DOOR)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND RT APU DOOR INBD FORWARD FLANGE WORN. INSTALLED DOUBLER WITH SEALER PER SRM 51-20-0 FIG 7 AND RIVETS. (X)

Part: LONGERON — CRACKED (BS 160)

MCI - DURING OP 16 MAINTENANCE CHECK FOUND LONGERON 4L AT FS 160 WITH A .3750 INCH CRACK RADIATING FROM BOTH SIDES OF INBD FASTENER ATTACHMENT TO FORMER. MADE LONGERON REPAIR SPLICE PER SRM 53-02, FIG 8. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: SKIN — DENTED (BS 237)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND DENT IN SKIN ON FORMER STA 237, S19L TO 20L, 3 INCHES BY 2 INCHES BY .050 INCH DEEP. HFEC FOUND NO CRACKS IN DENT. REPAIRED PER SRM 53-04, FIGURE 38, SHEET 25. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: FRAME — CRACKED (APU DOOR)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND FORWARD FRAME CRACKED ON RT APU DOOR. STOP DRILLED CRACK AND INSTALLED DOUBLER WITH RIVETS AND SEALER PER SRM 51-20-0. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: FRAME — CRACKED (BS 617)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LOWER FUSELAGE FORMER CRACKED AT STA 617, LONGERON 25L. INSTALLED ANGLE REPAIR ON FORMER PER SRM 53-01, PAGE 110 FIG 2. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: TIE — CRACKED (BS 585)

MCI - DURING OP 16 MAINTENANCE CHECK FOUND STR 27R WITH TIE CRACKED AT STA 585. REPLACED LONGERON FITTING PER SRM 51-01, PAGE 1 PARA C. (X)

Part: FITTING — CRACKED (BS 551)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND STRINGER TO FORMER FITTING CRACKED AT LONGERONS 29R TO 30R, STA 551. FITTING REPLACED WITH NEW PER SRM 51-01, PAGE 1. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: WEB — CORRODED (BS 148)

MCI - DURING OP 16 MAINTENANCE CHECK FOUND CORROSION ON MEMBRANE UNDER FLOOR PANEL NR 1, STA 148, RBL 44 TO RBL 48 INCHES. REMOVED AND INSTALLED NEW MEMBRANE PER SRM 51-03, PAGE 4, STA 141 TO STA 205.6, .50 INCH IN OF RIGHT SERVICE DOOR. (TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: SPLICE — CRACKED (BS 824)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LONGERON 28L SPLICE FITTING CRACKED AT STA 824. INSTALLED NEW PART PER SRM 51-01, PAGE 1, ITEM C. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: FITTING — CRACKED (BS 632)

MCI - DURING OP 16 MAINTENANCE CHECK FOUND STRINGER TO FORMER FITTING CRACKED AT STA 632, L29R TO 30R. FITTING REPLACED WITH NEW PER SRM 51-01, PAGE 1. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: SPLICE — CRACKED (BS 825)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LONGERON 29L SPLICE FITTING CRACK AT STA 825. REPLACED LONGERON SPLICE PER SRM 51-01, PG 1, ITEM C. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: SUPPORT — CRACKED (BS 588)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND CRACKED SUPPORT BRACKET AT FS 588 BETWEEN STR 29L AND STR S30L. INSTALLED NEW BRACKET PER SRM 51-01, PAGE 1, ITEM C. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: SKIN — GOUGED (BS 100)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND DENT AND GOUGE AT FS 100, LONGERON 18L, 1 INCH BY 1 INCH BY .025 INCH DEEP. NO CRACK FOUND. REPAIRED PER SRM 53-04, PAGE 218. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: FRAME — CRACKED (BS 980)

MCI - DURING OP 16 MAINTENANCE CHECK FOUND CRACK IN FORMER RING AT STA 980, LONGERON 22L. REPAIRED CRACK PER SRM 53-03, PAGE 45. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: FRAME — CRACKED (BS 617)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND FUSELAGE FORMER SUPPORT FOOT CRACKED BETWEEN LONGERONS 30L AND 29L AT STA 617. REPLACED FORMER TO STRINGER SUPPORT CLIP PER SRM 51-01, PG 1. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: SEAT TRACK — CORRODED (BS 200)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND CORROSION IN CHAIR TRACK AT STA 200. REPLACED TRACK PER SRM 51-01, PAGE 1 ITEM C. TOTAL TIME: 72,580 HOURS. TOTAL CYCLES: 77,573. (X)

Part: TIE — CRACKED (BS 585)

MCI - DURING OP 16 MAINTENANCE CHECK FOUND STR 28R TIE CRACKED AT STA 585. REPLACED STRINGER FTG PER SRM 51-01, PARA C. (X)

Part: TIE — CRACKED (BS 585)

MCI - DURING OP 16 MAINTENANCE CHECK, FOUND STR 28L TIE CRACKED AT STA 585. REPLACED LONGERON FITTING PER SRM 51-01, PAGE 1 PARA C. (X)

Part: BATTERY PACK — DISCHARGED (CABIN)

STL - FLT 578 - DURING CRUISE, EMERGENCY ESCAPE PATH LIGHTING ILLUMINATED. REMOVED AND REPLACED BATTERY PACK, MFG P/N 58922-2, MANUFACTURED BY LUMINESCENT SYSTEMS, INC. OPERATIONAL CHECK NORMAL. (M)

Part: HYD LINE — LOOSE (RT MLG ACT)

STL - DURING CLIMB RIGHT MAIN GEAR UNSAFE LIGHT ILLUMINATED. REROUTED AND SECURED RIGHT MAIN GEAR ACTUATOR HYDRAULIC SUPPLY LINES. OPERATIONAL GEAR SWING NORMAL. (M)

Part: BATTERY PACK — DISCHARGED (RT NACELLE)

STL - DURING OVERNIGHT, FOUND RIGHT NACELLE EMERGENCY LIGHT INOP. FOUND BATTERY PACK MFG P/N 39164, MALFUNCTIONING. REPLACED BATTERY PACK AND EMERGENCY LIGHT SYSTEM OPERATION CHECKED NORMAL.

Part: STRUT — REQUIRED SERVICE (NLG)

CVG - FLT 421 - AFTER TAKEOFF WHEN LANDING GEAR WAS RETRACTED, NLG WOULD NOT RETRACT. LUBRICATED NOSE GEAR, SERVICED STRUT WITH HYDRUALIC FLUID AND NITROGEN. OPERATED LANDING GEAR SEVERAL TIMES AND OPERATION AND INDICATION CHECKED NORMAL. CHECK C - 8-11-96 - STL.

Part: CONNECTOR — LOOSE (RT MLG DOOR SW)

STL - FLT 394 - DURING APPROACH WHEN LANDING GEAR WAS EXTENDED, LANDING GEAR DOOR OPEN LIGHT REMAINED ON. VISUAL CHECK SHOWED LANDING GEAR DOORS TO BE CLOSED. FOUND PIN PUSHED BACK IN RIGHT GEAR DOOR SWITCH CONNECTOR. SECURED PIN IN RIGHT GEAR DOOR SWITCH CONNECTOR. LANDING GEAR DOOR OPERATION AND INDICATION CHECKED NORMAL. CHECK C - 8-11-95 - STL.

Part: LATCH — NOT LATCHED (LT MLG DOOR)

STL - FLT 541 - AFTER TAKEOFF, LANDING GEAR RETRACTION LEFT MLG UNSAFE LIGHT REMAINED ON. CYCLED LANDING GEAR AND LANDING GEAR DOOR OPEN LIGHT REMAINED ILLUMINATED. FOUND LEFT MLG DOOR LATCH HOOK NOT LATCHING INTO POSITION. RIGGED DOOR LATCH ROLLER ASSY. LANDING GEAR AND DOOR OPERATION AND INDICATION CHECKED NORMAL. CHECK C - 8-11-95 - STL.