N7518A

Part: VALVE — FAILED (ANTI-SKID SYS) · airframe 60,843 hrs · 31,604 cycles

LAX - INFLIGHT DFW-SAN. CREW REPORTED WHEN LANDING GEAR WAS EXTENDED, ALL ANTISKID LIGHTS CAME ON. CYCLED GEAR AFTER GO AROUND, AND AGAIN ALL ANTISKID LIGHTS CAME ON. RAN QRH CHECKLIST. EMERGENCY DECLARED FLIGHT DIVERTED LAX LANDED WITHOUT INCIDENT. WHEN GEAR HANDLE WAS EXTENDED AT DIVERTED AIRPORT ALL ANTISKID LIGHTS STAYED OFF. AIRCRAFT REMOVED FROM SERVICE. REPLACED ALL FOUR ANTI-SKID VALVES. SYSTEM GROUND CHECK NORMAL OPERATION.

Part: ANTI-SKID VALVE — FAULTY (MLG) · airframe 59,749 hrs · 30,997 cycles

DFW - DURING ANTI-SKID TEST PRIOR TO LANDING RECEIVED LEFT AND RIGHT INBOARD AND OUTBOARD ANTI-SKID FAIL LIGHTS. EMERGENCY DECLARED LANDED DFW WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT INBOARD ANTI-SKID VALVE. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: SKIN — CRACKED (LT WING) · airframe 59,072 hrs · 30,625 cycles

LEFT WING LEADING EDGE CRACK BELOW SLAT NUMBER 2 APPROXIMATELY 4.5 INCHES LONG. ACCOMPLISHED DOUBLER REPAIR PER SRM 57-06B-00 FIGURE 14.

Part: PAN — CORRODED (FUSELAGE) · corrosion level 2 · airframe 56,496 hrs · 29,209 cycles

AFT LAVATORY SERVICE PANEL PAN CORRODED. INSTALLED DOUBLER PER EA MD80-53-006505.

Part: CARGO TRACK — CORRODED (CARGO BAY) · corrosion level 2 · airframe 56,494 hrs · 29,208 cycles

AFT CARGO TIE DOWN TRACK CORRODED STATIONS 1211-1236. INSTALLED NEW RIGHT AFT TIE DOWN TRACK PER SRM 51-01-00 AND SRM 51-30-01.

Part: WEB — CORRODED (FUSELAGE) · corrosion level 2 · airframe 56,494 hrs · 29,208 cycles

HEAVY CORROSION AROUND NUT PLATES ON WEB STATIONS 1211-1216. REPLACED WEB FROM STATIONS 1204 TO 1216 FROM LONGERON 30 RIGHT TO LONGERON 26 RIGHT SPLICED IN NEW SECTION PER AARD 53-10-00-24 AND SRM 51-30-00.

Part: BEAM — CORRODED (CARGO BAY) · corrosion level 2 · airframe 56,494 hrs · 29,208 cycles

AFT CARGO DOOR BEAM CORRODED STATION 1155-1211. INSTALLED FULL LENGTH DOOR BEAM DOUBLER PER AARD 53-10-00-3.

Part: ANGLE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 56,494 hrs · 29,208 cycles

ANGLE AT FORWARD LOWER DOOR BEAM, CORROSION REMOVAL OUT OF LIMITS. REMOVED AND INSTALLED NEW ANGLE BRACKET AT LOWER DOOR BEAM STATION 1155 PER SRM 51-30-00.

Part: PAN — CRACKED (CARGO DOOR) · airframe 56,494 hrs · 29,208 cycles

AFT CARGO DOOR OUTER PAN CRACKED APPROXIMATELY 1.5 INCH IN RADIUS AT AFT END OF NR 5 BEAM. STOP DRILLED CRACK OUTER DOOR PAN AFT END NR 5 BEAM, FABRICATED AND INSTALLED DOUBLER PER SRM 52-30-00 AND ESO 80174.

Part: CUSP WEB — CRACKED (FUSELAGE) · airframe 56,476 hrs · 29,196 cycles

RT CUSP CRACKED OUTBOARD OF NR 6 SEAT TRACK. REMOVED DAMAGE AND INSTALLED DOUBLER PER AARD 53-20-00-16.

Part: CUSP WEB — CORRODED (FUSELAGE) · airframe 56,476 hrs · 29,196 cycles

CUSP HAS CORROSION STA 579-584, L18R. INSTALLED DOUBLER PER AARD 53-20-00-16.

Part: CUSP WEB — CRACKED (FUSELAGE) · airframe 56,476 hrs · 29,196 cycles

RT CUSP CRACKED OUTBOARD OF NR 6 SEAT TRACK. CUT OUT DAMAGE AND INSTALLED DOUBLER PER AARD 53-20-00-16.

Part: FRAME — CRACKED (FUSELAGE) · airframe 56,476 hrs · 29,196 cycles

RT FRAME CRACKED AT STA 886. INSTALLED NEW FRAME PER SRM 51-01-00.

Part: CUSP WEB — CORRODED (FUSELAGE) · airframe 56,476 hrs · 29,196 cycles

RT CUSP CORRODED STA 643-646. INSTALLED DOUBLER PER AARD 53-20-00-16.

Part: LONGERON — CRACKED (FUSELAGE) · airframe 56,487 hrs · 29,205 cycles

CRACK AT LONGERON 4 LEFT, STATION 200. REMOVED AND REPLACED LONGERON 4 LEFT FROM STATION 160 TO 230 PER SRM 53-02-00 FIGURE 18.

Part: CUSP WEB — CORRODED (FUSELAGE) · airframe 56,476 hrs · 29,196 cycles

RT CUSP HAS CORROSION. REMOVED CORROSION AND INSTALLED DOUBLER PER AARD 53-20-00-16.

Part: BEAM — CRACKED (ENTRY DOOR) · airframe 56,494 hrs · 29,208 cycles

FORWARD ENTRY DOOR APPROXIMATELY .25 INCH CRACK AT FORWARD END OF SECOND FROM TOP BEAM.

Part: FLOORBEAM — CRACKED (FUSELAGE) · airframe 56,490 hrs · 29,206 cycles

STATION 927 RIGHT SIDE OF FLOORBEAM HAS CRACK IN UPPER LEG OF BEAM 6 INCHES INBOARD OF FRAME. REPLACED FLOORBEAM AT STATION 927 RIGHT BUTTLINE 22 TO 56 PER SRM 51-01-00.

Part: CUSP WEB — DAMAGED (FUSELAGE) · corrosion level 2 · airframe 56,476 hrs · 29,196 cycles

LEFT CUSP HAS CORROSION BENEATH AFT GIRT BAR FITTING. INSTALLED DOUBLER ON LEFT CUSP UNDER AFT GIRT BAR BRACKET STA 1166 PER AARD 53-20-00-16.

Part: SEAT TRACK — DAMAGED (FUSELAGE) · airframe 56,475 hrs · 29,196 cycles

DEEP WORN AREA ON NR 4 SEAT TRACK. INSTALLED SEAT TRACK PLUG REPAIR PER AARD 53-20-00-10.

Part: CUSP WEB — CORRODED (FUSELAGE) · corrosion level 2 · airframe 56,490 hrs · 29,206 cycles

CORROSION ON LEFT CUSP BETWEEN STATIONS 604-711. INSTALLED CUSP SHEET PER SRM 51-01.

Part: CUSP WEB — CORRODED (FUSELAGE) · corrosion level 2 · airframe 56,487 hrs · 29,205 cycles

LEFT CUSP CORRODED. INSTALLED CUSP DOUBLER BELOW GIRT BAR BRACKET PER AARD 53-20-00-16.

Part: SUPPORT — DAMAGED (FUSELAGE) · corrosion level 2 · airframe 56,475 hrs · 29,169 cycles

CORROSION ON WATER PAN SUPPORT. REMOVED AND REPLACED WATER PAN SUPPORT PER SRM 53-00.

Part: SKIN — DENTED (FUSELAGE) · airframe 56,475 hrs · 29,196 cycles

SKIN IS DENTED AND BUCKLED OVER FRAME BETWEEN L18L-L17L. INSTALLED DOUBLER PER SRM 53-04 FIGURE 38.

Part: BRAKE — DAMAGED (MLG)

STL TAXI T1118/20DEC - DURING TAXI SOUNDS AND FEELS LIKE A POSSIBLE DRAGGING BRAKE. AIRCRAFT PULLS TO THE RIGHT. SUSPECT RIGHT BRAKES DRAGGING BUT HAVE INDICATION OF HIGH TEMPERATURE ON LEFT INBOARD BRAKE. FOUND NUMBER TWO WHEEL ASSEMBLY INNER HUB BROKEN AND DAMAGE TO BRAKE. REPLACED NUMBER TWO BRAKE AND NUMBER TWO MAIN LANDING GEAR TIRES AND WHEEL ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BATTERY PACK — INOPERATIVE (EMERGENCY LIGHT)

MSP - CEILING EMERGENCY LIGHTS AT SEAT ROWS 25 AND 26 INOPERATIVE. REPLACED BATTERY PACK FOR CEILING EMERGENCY LIGHTS AT SEAT ROWS 25 AND 26. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: LENS — MISSING (EMERGENCY LIGHT)

MSP - EMERGENCY LIGHT AT SEAT ROW 22 MISSING LENS. REPLACED LENS FOR EMERGENCY LIGHT AT SEAT ROW 22. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BULB — MISSING (EMERGENCY LIGHT)

MSP - EMERGENCY LIGHT AT SEAT ROW 22 MISSING LAMP. RELAMPED EMERGENCY LIGHT AT SEAT ROW 22. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: CONTROLLER — INOPERATIVE (CABIN PRESSURE)

CABIN PRESSURE ROSE AT FLIGHT LEVEL 340 AND CABIN MASKS AUTO DEPLOYED AT FLIGHT LEVEL 140. EMERGENCY DESCENT TO 10000. AFTER LEVEL AT 10000 PACK FLOW RETURNED AND BOTH PRESSURIZATION CONTROLLERS RESET. FAILURE OCCURRED JUST AFTER EXITING ICING CONDITIONS AND ANTI ICE SECURED. LANDED ABQ WITHOUT INCIDENT. REPLACED BOTH NUMBER ONE AND NUMBER TWO CONTROLLERS. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BATTERY PACK — DISCHARGED (CABIN)

LGA FORWARD CABIN EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERY PACK FOR FORWARD CABIN EMERGENCY LIGHTS. SYSTEM GROUND CHECKED NORMAL OPERATION. (CLOSED)

Part: BATTERY PACK — DISCHARGED (CABIN)

SFO - CEILING EMERGENCY LIGHTS OVER SEATS 17 TO 21 INOPERATIVE. REPLACED BATTERY PACK B5104 FOR CEILING EMERGENCY LIGHTS OVER SEATS 17 TO 21. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BATTERY PACK — INOPERATIVE (EMERGENCY LIGHT)

SAT - EMERGENCY EXIT LIGHT IN COCKPIT R1 SERVICE DOOR IS INOPERATIVE. REPLACED BATTERY PACK FOR EMERGENCY EXIT LIGHT IN COCKPIT R1 SERVICE DOOR. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: PITOT LINE — LEAKING (AIRSPEED)

MIA - INFLIGHT T518 AT ROTATION AND LIFT OFF RUDDER RATIO LIGHT AND MACH INDICATOR LIGHT CAME ON. CAPTAIN AND FIRST OFFICER AIR SPEED NOT RELIABLE. CENTER GOOD. RETURNED TO MIA AND LANDED WITHOUT INCIDENT. COMPLETED RUDDER RATIO TEST/ADJUSTMENT AND NO FAULTS FOUND ON RUDDER RATIO MODULES. FOUND LEAKING PITOT LINE. SECURED PITOT LINE. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BATTERY PACK — INOPERATIVE (EMERGENCY LIGHT)

DURING OVERNIGHT MAINTENANCE, EMERGENCY EXIT LIGHTING INOPERATIVE AT THE OVERWING EMERGENCY EXIT. REPLACED BATTERY PACK. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: SENSOR — INOPERATIVE (NLG)

DFW-ORD - DURING CRUISE, NOSE INDICATOR LIGHT/RED/CAME ON AND OFF SEVERAL TIMES. FOLLOWED QRH PROCEDURES. FLEW REST OF FLIGHT WITH LANDING GEAR DOWN. USED EMERGENCY GEAR EXTENSION HANDLE AS PER QRH. GOT 3 GREEN LIGHTS WITH HANDLE DOWN. AIRCRAFT LANDED WITHOUT INCIDENT. REPLACED D1-32 AND D1-32 SENSORS. PERFORMED GEAR SWING. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: BATTERY PACK — DISCHARGED (CABIN)

AUS - DURING OVERNIGHT MAINTENANCE, EMERGENCY ESCAPE PATH LIGHTING SEAT 14DEF INOPERATIVE. REPLACED EMERGENCY ESCAPE PATH LIGHTING BATTERY PACK. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: CONNECTOR — DISCONNECTED (CABIN)

DFW - DURING OVERNIGHT MAINTENANCE, EMERGENCY EXIT LIGHTS IN AFT STAIRS SECTION INOPERATIVE. RECONNECTED GROUND WIRE FOR EMERGENCY EXIT LIGHTS IN AFT STAIRS SECTION. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING OVERNIGHT MAINTENANCE DISCOVERED ROW 28 EMERGENCY OVERHEAD LIGHT INOPERATIVE. REPLACED BATTERY PACK SYSTEM CHECKED NORMAL OPERATION.

Part: WEB — CORRODED (FUSELAGE)

TUL - FOUND RIGHT CUSP CORRODED BETWEEN LIGHTENING HOLES STATION 1236-1238. INSTALLED DOUBLER ON CUSP PER SRM 53-01. (M)

Part: LONGERON — CRACKED (FS 160)

TUL - FOUND LONGERON 4L CRACKED AROUND FASTENERS AT STATION 160. REMOVED SECTION OF DAMAGED LONGERON. INSTALLED NEW SECTION OF LONGERON AND DOUBLER PER SRM 53-02 FIG 18. (M)

Part: SEAT TRACK — CORRODED (FS 1200-1202)

TUL - FOUND CORROSION ON NR 2 SEAT TRACK STATION 1200-1202. REPAIRED SEAT TRACK STATION 1182-1260 BY SPLICING NEW SEAT TRACK SECTION PER SRM 53-05 FIG 4. (M)

Part: WEB — DENTED (FUSELAGE)

TUL - FOUND DENT IN LEFT CUSP OUTBOARD OF LIGHTENING HOLE STATION 1244. INSTALLED DOUBLER PER SRM 53-04. (M)

Part: WEB — PUNCTURED (FUSELAGE)

TUL - FOUND LEFT CUSP HAS PUNCTURE BELOW GALLEY TIE DOWN STATION 1207 BELOW NR 1 SEAT TRACK. INSTALLED DOUBLER PER SRM 53-01 FIG 4-3. ROUTED SEAT TRACK FOM NR 1 STATION 1207. INSTALLED SEAT TRACK PLUG PER SRM 53-05 FIG 4A. (M)

Part: SKIN — DENTED (FS 235)

TUL - FOUND DENT IN FUSELAGE SKIN STATION 235 BETWEEN LONGERON 18L AND LONGERON 19L. INSTALLED .063 INCH 2024T3 DOUBLER PER SRM 53-04 FIG 12B. (M)

Part: SKIN — DAMAGED (FUSELAGE)

TUL - FOUND SLIGHT CREASE IN LEFT SIDE OF FUSELAGE SKIN 36 INCHES AFT AND 18 INCHES DOWN FROM FORWARD ENTRY DOOR. INSTALLED DOUBLER PER SRM 53-04 FIG 12B. (M)

Part: INTERCOSTAL — CRACKED (BS 1291)

TUL - FOUND INTERCOSTAL STATION 1291 BL0 CRACKED. REPLACED INTERCOSTAL PER SRM 51-01. (M)

Part: SKIN — DENTED (FS 232)

TUL - FOUND DENT IN FUSELAGE SKIN AT STATION 232 BETWEEN LONGERON 20L AND LONGERON 21L. CUT 1 INCH HOLE TO REMOVE DAMAGE INSTALLED .063 INCH 2024-T3 DOUBLER PER SRM 53-04 FIG 12B. (M)

Part: SEAT TRACK — CORRODED (BS 205-237)

TUL - FOUND CORROSION ON SEAT TRACK NR 5 SEVERAL AREAS STATION 205-237. INSTALLED NEW TRACK NR 5 STATION 200-240 PER SRM 53-05. (M)

Part: SKIN — DENTED (FS 1318)

TUL - FOUND SMALL DENT ON FUSE BELOW RIGHT ENGINE ENGINE AT STATION 1318 BETWEEN LONGERON 19 AND 20R ADL NR 5180005. CUTOUT DAMAGE AREA, INSTALLED DOUBLER PER SRM 53-04-00 FIGURE 38 SHEET 23. (M)

Part: SEAT TRACK — CORRODED (BS 215)

TUL - FOUND CORROSION ON SEAT TRACK 6 AT STATION 215-216. INSTALLED NEW SECTION OF SEAT TRACK FROM STATION 215-304 IAW SRM 53-05. (M)

Part: WEB — PUNCTURED (FUSELAGE)

TUL - FOUND LEFT CUSP PUNCTURED BELOW GALLEY TIE DOWN NR 1 SEAT TRACK STATION 1236. INSTALLED DOUBLER PER SRM 53-01 FIG 4-3. ROUTED OUT NR 1 SEAT TRACK FOM (CUSP REPAIR). INSTALLED SEAT TRACK PLUG REPAIR PER SRM 53-05 FIG 4A. (M)

Part: DOOR FRAME — CORRODED (FUSELAGE)

TUL - FOUND AFT CARGO DOOR JAMB BEAM IS CORRODED FROM STATION 1159 TO STATION 1208, ONE SMALL AREA BEYOND LIMITS AFTER CORROSION REMOVAL. INSTALLED SRO9520008-15 DOUBLER PER AARD 53-10-00-3. (M)

Part: SEAT TRACK — CORRODED (FUSELAGE)

TUL - FOUND CORROSION ON SEAT TRACK NR 3 AT 1302-1303. FABRICATED AND INSTALLED NEW TRACK STATION 1260-1309 PER SRM 53-05. (M)

Part: RING — CRACKED (FUSELAGE)

TUL - FOUND WINDOW RING PAN CRACKED STATION 599 RIGHT SIDE LOWER FORWARD CORNER. TRIMMED OUT CRACK AND INSTALLED DOUBLER PER AARD 53-10-00-25. (M)

Part: SWITCH — DEFECTIVE (COCKPIT)

ORD - DURING OVERNIGHT MAINTENANCE, EMERGENCY AC BUS LIGHT INOPERATIVE. REPLACED EMERGENCY AC BUS LIGHT SWITCH. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: CLAMP — LEAKING (ACM)

SJC - FLT 1810 - RED TAIL COMPARTMENT TEMP HIGH LIGHT CAME ON SHORTLY AFTER TAKEOFF AT SJC. COMPLIED WITH RED BOX EMERGENCY ITEMS AND COMPLETED CHECKLIST AND LIGHT REMAINED ON UNTIL POWER WAS REDUCED ON SHORT FINAL. RETURNED AND LANDED SJC WITHOUT INCIDENT. REPLACED RIGHT AIR CONDITIONING PACK REGULATOR VALVE AND INSTALLED NEW CLAMPS. AIR LEAK AT CLAMPS IS THE REASON FOR REPLACEMENT. SYSTEM GROUND CHECK NORMAL OPERATION. (M)

Part: LIGHT — LOOSE (CABIN)

PHX - DURING OVERNIGHT MAINTENANCE, EMERGENCY EXIT FLOOR PATH LIGHT IN FORWARD GALLEY INOPERATIVE. RECONNECTED WIRES TO EMERGENCY EXIT FLOOR PATH LIGHT IN FORWARD GALLEY. SYSTEM GROUND CHECK NORMAL OPERATION. (M)

Part: CONNECTOR — FAILED (CABIN)

DFW - DURING OVERNIGHT MAINTENANCE, EMERGENCY EXIT FLOOR PATH LIGHT FROM FRONT ENTRY TO FIRST CLASS INOPERATIVE. REPLACED EMERGENCY EXIT FLOOR PATH LIGHT CONNECTOR FOR FRONT ENTRY TO FIRST CLASS. SYSTEM GROUND CHECK NORMAL OPERATION. (M)

Part: LIGHT — INOPERATIVE (SEAT 20D)

DFW - DURING OVERNIGHT MAINTENANCE EMERGENCY EXIT FLOOR PATH LIGHT AT SEAT 20D INOPERATIVE. REPLACED EMERGENCY EXIT FLOOR PATH LIGHT STRIP AT SEAT 20D. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: COALESCER — CONTAMINATED (ACM BAY)

SAN - FLT 310 - AFTR TAKEOFF, ON INITIAL CLIMB-OUT STRONG ELECTRICAL FUMES IN AFT CABIN. AIRCRAFT RETURNED TO SAN AND LANDED WITHOUT FURTHER INCIDENT. NO DISCREPANCIES FOUND. REPLACED COALESCER BAGS AND ACCOMPLISHED PACK BURNOUT. SYSTEM GROUND CHECK NORMAL OPERATION. (M)

Part: RELAY — FAILED (E/E BAY)

DFW - FLT 1329 - DURING CLIMB-OUT, AIRCRAFT EMERGENCY BUS OFF LIGHT ILLUMINATED AND CAPTAINS INSTRUMENTS WENT BLANK. THE FIRST OFFICER SMELLED SMOKE IN THE COCKPIT. AIRCRAFT AIR INTERRUPTED AND RETURNED DFW AND LANDED OVERWEIGHT WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND EMERGENCY POWER TRANSFER RELAY FAULTY. REPLACED EMERGENCY POWER TRANSFER RELAY. ACCOMPLISHED OVERWEIGHT LANDING INSPECTION WITH NO FINDINGS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: WIRE — FAILED (CABIN)

DFW - DURING OVERNIGHT MAINTENANCE, FORWARD EMERGENCY EXIT FLOOR PATH LIGHT STRIP INOPERATIVE. REPLACED SPLICE IN EMERGENCY EXIT FLOOR PATH LIGHT STRIP. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: VALVE — FAILED (RT ENGINE)

DFW - FLT 1009 - DURING CLIMB THROUGH FL 18, RIGHT START VALVE OPEN LIGHT ILLUMINATED. CREW PERFORMED IN FLIGHT SHUT DOWN OF RIGHT ENGINE AND LANDED DFW OVERWEIGHT WITHOUT FURTHER INCIDENT. AN OVERWEIGHT INSPECTION WAS ACCOMPLISHED WITH NO FINDINGS. REPLACED RIGHT ENGINE START VALVE AND ACCOMPLISHED OPERATIONS CHECK WITH NORMAL OPERATION. SYSTEM GROUND AND LEAK CHECKED NORMAL OPERATION. (M)

Part: WIRE — LOOSE (CABIN)

DFW - DURING OVERNIGHT CHECK, EMERGENCY EXIT LIGHT AT AFT STAIRWELL ON CAT WALK INOPERATIVE. RESECURED LOOSE WIRE ON EMERGENCY EXIT LIGHT AT AFT STAIRWELL ON CATWALK. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: DUCT — DEFECTIVE (RIGHT)

DFW - FLT 638 - AFTER TAKEOFF DFW, DURING CLIMB-OUT, TAIL COMPT OVERHEAT LIGHT ILLUMINATED. ACCOMPLISHED ABNORMAL PROCEDURES AND LIGHT EXTINGUISHED WHEN LEFT PACK SHUT OFF. AIRCRAFT RETURNED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED LEFT PRESSURE REGULATOR VALVE AND CLAMPS. ACCOMPLISHED GROUND ENGINE RUN TO TAKEOFF POWER WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED NORMAL OPERATION. SUBSEQUENTLY, AIRCRAFT DEPARTED DFW AT T1205 AND PROBLEM REPEATED DURING CLIMB-OUT. AIRCRAFT LANDED DFW WITHOUT INCIDENT. REPLACED RIGHT WATER SEPARATOR DUCT. SYSTEM LEAK AND GROUND CHECKED NORMAL OPERATION. ACCOMPLISHED FUNCTIONAL CHECK FLIGHT WITH NO DEFECTS FOUND. SYTEM OPERATIONAL CHECKED NORMAL. (M)