N477AA

Part: BATTERY — DISCHARGED (CABIN) · airframe 76,373 hrs · 40,553 cycles

AFT SERVICE DOOR EMER EXIT LIGHT NOT WORKING. R & R AFT SERVICE DOOR EMER LIGHTS BATTERY IAW AMM 33-53-00.

Part: CONTROLLER — FAULTY (CABIN PRESSURE) · airframe 75,908 hrs · 40,275 cycles

DURING & AFTER LG RETRACTION A RUBBER BURNING SMELL WAS IN THE COCKPIT, SOUNDS WERE NORMAL. R & R LT & RT PRESS REGULATOR CONTROLLERS IAW AMM 21-31-01. PERFORMED A LEAK CHECK OF BOTH VLVS & PERFORMED A PACK BURN OUT IAW AMM 21-92-12. SYS CHECKED NORMAL.

Part: CUSP WEB — CRACKED (BS 1250-1309) · airframe 75,402 hrs · 39,980 cycles

RIGHT FLOOR CUSP CRACKED IN 2 PLACES BETWEEN FS 1287 & 1309. R & R RT FLOOR CUSP SECTION BETWEEN FS 1250 - 1309 IAW AARD 51-00-05-1 & DWG 9930612.

Part: WEDGE — DAMAGED (TE FLAP) · airframe 75,402 hrs · 39,980 cycles

RIGHT INBD FLAP OTBD REMOVABLE WEDGE HAS FOD DAMAGE LOWER SIDE AT STATION XW 47.450. REMOVED DAMAGE & INSTALLED EXTERNAL DOUBLER IAW SRM 57-03-00-001 FIGURE 8.

Part: FLOORBEAM — CRACKED (FUSELAGE) · airframe 75,402 hrs · 39,980 cycles

CABIN FLOORBEAM CRACKED AT STATION 180, 19 INCHES LT OF CEILING CTR LINE. STOP DRILLED CRACK & INSTALLED REPAIR DOUBLER.

Part: LONGERON — CRACKED (FUSELAGE) · airframe 74,637 hrs · 39,531 cycles

CRACK ON LONGERON 25 LT BETWEEN FUSELAGE STATIONS 160 & 200. REPAIRED LONGERON IAW SRM 53-02-00 FIG 18 SHEET 1.

Part: FORMER — CRACKED (RT WING) · airframe 74,637 hrs · 39,531 cycles

RIGHT WING LE NR 4 SLAT TRACK INBD FORMER IS CRACKED. INSTALLED RT WING NR 4 INBD FORMER DOUBLER & HAT BUSHING IAW WORK CARD 57-98-06.

Part: RIB — CRACKED (LT WING) · airframe 71,968 hrs · 37,988 cycles

LT WING LE RIB INBD OF NR 4 SLAT TRACK CRACKED AT PULLEY BRACKET MOUNT LOWER AFT LUG. INSTALLED DOUBLER IAW EA MD80-57-032563.

Part: TRANSDUCER — INOPERATIVE (ANTI-SKID SYS) · airframe 71,928 hrs · 37,965 cycles

DFW CREW REPORTED WHEEL NOT TURNING LIGHT ILLUMINATED ON TAKE-OFF ROL. CREW ABORTED TAKE-OFF. LIGHT WENT OUT AFTER ABORT. REPLACED NRS 1, 2 & 3 ANTI SKID TRANSDUCERS ALONG WITH ANTISKID CONTROL BOX. SYSTEM GROUND CHECKED NORMAL OPERATION CLOSED.

Part: START VALVE — FAILED (RT ENGINE) · airframe 71,873 hrs · 37,935 cycles

MCI RT HAND ENGINE START VLV OPEN LIGHT ILLUMINATED. EMERGENCY DECLARED FLIGHT RETURNED MCI LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RT HAND ENGINE START VLV & STARTER ASSEMBLIES. SYSTEM GROUND CHECKED NORMAL OPERATION CLOSED.

Part: O-RING — DAMAGED (APU) · airframe 68,334 hrs · 35,866 cycles

SMF - CREW REPORTED SMOKE IN COCKPIT AND THEN CABIN. EMERGENCY DECLARED FLIGHT RETURNED SMF LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND AUXILIARY POWER UNIT OIL COOLER LINE LEAKING. REPLACED O-RING ON THE APU OIL COOLER. SYSTEM GROUND CHECK NORMAL OPERATION.

Part: PAN — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

FORWARD SERVICE DOOR JAMB PAN, LOWER FLANGE CRACKED AT STATION 176. INSTALLED NEW LOWER SECTION OF FORWARD SERVICE DOOR PAN PER SRM 53-05-00 FIGURE 55 AND DRAWING J060288.

Part: ANGLE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

CORROSION ON CUSP T-ANGLE AT STATION 201 AND RIGHT BUTTLINE 57. INSTALLED NEW SECTION OF RIGHT CUSP ANGLE FROM STATIONS 165 TO 230 PER SRM 53-05-00 FIGURE 55 AND BOEING DRAWING J060288.

Part: MEMBRANE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

DOUBLER ON SUBFLOOR IS CORRODED FROM STATIONS 201 TO 206 FORWARD OF NUMBER 6 SEAT TRACK. INSTALLED DOUBLER PER AARD 53-20-00-16.

Part: MEMBRANE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

CORROSION ON SUBFLOOR FROM STATIONS 160 TO 200 RIGHT BUTTLINES 46 TO 57. INSTALLED OVERLAY DOUBLER PER AARD 51-10-00-5.

Part: SEAT TRACK — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

NUMBER 5 SEAT TRACK OUTBOARD FLANGE AT STATION 205 CORRODED. INSTALLED NEW SECTION OF NUMBER 5 SEAT TRACK STATIONS 200 TO 244 AND SPLICE PER SRM 53-05-00 FIGURE 4F.

Part: SEAT TRACK — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

CORROSION FOUND ON SEAT TRACK NUMBER 6 BETWEEN STATIONS 218 AND 237. INSTALLED NEW SEAT TRACK NUMBER 6 AND SPLICE FROM STATIONS 214 TO 303 PER SRM 53-05-00 FIGURE 4F.

Part: CUSP WEB — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

DOUBLER ON SUB-FLOOR IS CORRODED FROM STATIONS 201 TO 206 FORWARD OF NUMBER 6 SEAT TRACK. INSTALLED REPAIR DOUBLER FROM STATIONS 200 TO 218 RIGHT BUTTLINE 48 TO 58 PER AARD 53-20-00-16.

Part: PAN — CRACKED (FUSELAGE) · airframe 68,072 hrs · 35,711 cycles

FORWARD SERVICE DOOR JAMB PAN CRACKED AT STATION 176. SPLICED IN NEW LOWER SECTION PER SRM 53-05-00 FIGURE 55.

Part: BEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

MID CARGO DOOR OPENING LOWER BEAM HAS CORROSION AT STATION 640. INSTALLED DOUBLER PER AARD 53-10-00-3.

Part: BEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

AFT CARGO DOOR BEAM CORRODED STATION 1155 TO 1212. INSTALLED AFT CARGO BEAM DOUBLER PER AARD 53-00-10-03.

Part: ANGLE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

RIGHT CUSP ANGLE FROM STATIONS 165 TO 230. ACCOMPLISHED SPLICE REPAIR PER SRM 53-05-00 FIGURE 55.

Part: MEMBRANE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

SUBFLOOR CORRODED FROM STATIONS 160 TO 200 RIGHT BUTTLINES 46 TO 57. INSTALLED DOUBLER REPAIR PER AARD 53-20-00-16.

Part: CUSP WEB — CRACKED (FUSELAGE) · airframe 68,072 hrs · 35,711 cycles

RIGHT CUSP CRACKED AT STATION 730. INSTALLED DOUBLER PER AARD 53-20-00-16.

Part: PAN — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

G1 GALLEY DRAIN PAN CORRODED BELOW PAN. INSTALLED DOUBLER REPAIRED PER AARD 53-20-00-16.

Part: CUSP WEB — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

RIGHT CUSP FROM STATIONS 1183 TO 1187 CORRODED. REPAIRED CUSP PER AARD 53-20-00-16.

Part: MEMBRANE — CRACKED (FUSELAGE) · airframe 68,072 hrs · 35,711 cycles

LEFT SUBFLOOR CRACKED AT STATION 215 UNDER NUMBER 2 SEAT TRACK. INSTALLED DOUBLER REPAIR PER AARD 53-20-00-16.

Part: MEMBRANE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

SUBFLOOR CORRODED FROM STATIONS 200 TO 218, RIGHT BUTTLINES 48 TO 58. INSTALLED DOUBLER REPAIR PER AARD 53-20-00-16.

Part: BEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 68,072 hrs · 35,711 cycles

AFT CARGO BEAM CORRODED FROM STATIONS 1155 TO 1212. INSTALLED AFT CARGO BEAM DOUBLER PER AARD 53-00-10-03.

Part: CUSP WEB — CRACKED (FUSELAGE) · airframe 68,072 hrs · 35,711 cycles

STATION 258, LEFT CUSP CRACKED OUTBOARD OF NUMBER 2 SEAT TRACK. ROUTED OUT DAMAGED MATERIAL AND INSTALLED DOUBLER REPAIR AS PER AARD 53-20-00-16.

Part: SKIN — BENT (ENTRY DOOR) · airframe 68,072 hrs · 35,711 cycles

CABIN FORWARD ENTRY DOOR HAS SKIN BENT ON LOWER EDGE AT AFT CORNER. INSTALLED DOUBLER AT LOWER EDGE AFT CORNER OF FORWARD ENTRY DOOR PER AARD 52-10-00-2.

Part: FLOORBEAM — DAMAGED (FUSELAGE) · airframe 68,072 hrs · 35,711 cycles

MOUNT HOLE OBLONGED ON UNDERSIDE OF BEAM AT STATION 218 (OUTBOARD MOUNT HOLE FOR NUMBER 2 SEAT TRACK). INSTALLED OVER SIZED MOUNT BOLT IN SEAT TRACK TO FLOORBEAM HOLE PER AARD 51-60-00-01.

Part: SKIN — DAMAGED (CARGO DOOR) · airframe 68,072 hrs · 35,711 cycles

FORWARD CARGO DOOR SKIN HAS DENT WITH CREASE IN IT AT NUMBER 3 BEAM 12 INCHES FROM FORWARD EDGE. REMOVED AND REPLACED EXTERIOR SKIN PER ESO 80174.

Part: DOOR FRAME — CRACKED (ENTRY DOOR) · airframe 68,072 hrs · 35,711 cycles

AFT ENTRY DOOR - CRACK IN DOOR FRAME, LEFT SIDE DOWN NEAR THE SEAT HINGE MOUNT BOLT. REMOVED CRACKED DOOR FRAME PART AND INSTALLED NEW DOOR FRAME PART PER ESO 80186.

Part: PAN — CRACKED (OVERWING EXIT) · airframe 68,072 hrs · 35,711 cycles

CABIN SIDEWALL RIGHT FORWARD OVERWING EXIT DOOR HAS A CRACK IN DOOR PAN NEXT TO STOP PAD BRACKET AT UPPER FORWARD CORNER. STOP DRILLED CRACK AND INSTALLED REPAIR DOUBLER PER SRM 52-05-00 FIGURE 51 AND COMP-52-024000.

Part: CONTACT — DIRTY (CABIN) · airframe 67,555 hrs · 35,422 cycles

CEILING EMERGENCY LIGHTS FROM ROWS 28 TO 30 INOPERATIVE. CLEANED CONTACT ON BATTERY PACK AT ROW 27DEF. OPS CHECK NORMAL.

Part: CONTACT — DIRTY (CABIN) · airframe 67,555 hrs · 35,422 cycles

CEILING EMERGENCY LIGHTS FROM ROWS 22 TO 27 INOPERATIVE. CLEANED CONTACTS ON BATTERY PACK AT ROW 23DEF. OPS CHECK NORMAL.

Part: LIGHT — DISCONNECTED (AFT AIRSTAIRS) · airframe 67,555 hrs · 35,422 cycles

AIRSTAIR SIDEWALL ESCAPE PATH LIGHT INOPERATIVE. FOUND ESCAPE PATH LIGHT IN AFT STAIR DISCONNECTED. RESECURED LIGHT ASSEMBLY. OPS CHECK NORMAL.

Part: CONTACT — DIRTY (CABIN) · airframe 67,555 hrs · 35,422 cycles

RIGHT CENTER CEILING EMERGENCY LIGHT BETWEEN THE AFT LAVATORIES INOPERATIVE. CLEANED BATTERY CONTACT IN RIGHT AFT LAVATORY. OPS CHECK NORMAL.

Part: BEARING — DAMAGED (NR 2 ENGINE) · airframe 61,441 hrs · 32,045 cycles

ON FINAL APPROACH RIGHT ENGINE OIL QUANTITY FELL TO ZERO. OIL TEMP AT RED LINE, PRESSURE NORMAL. CREW SHUT NUMBER TWO ENGINE DOWN. LANDED WITHOUT INCIDENT. FOUND COMBUSTION CHAMBER FUEL DRAIN LEAKING OIL. SUSPECT ENGINE BEARING NR 4 DAMAGED. DOWNLOADED FLIGHT DATA RECORDER. REPLACED ENGINE NUMBER TWO.

Part: FITTING — CRACKED (WING) · airframe 60,546 hrs · 31,571 cycles

FORWARD SPAR LEFT SIDE FITTING CRACKED. INSTALLED NEW FITTING PER SRM 51-30-01.

Part: CASTING — CRACKED (SPOILER ACTUATOR) · airframe 60,546 hrs · 31,571 cycles

GROUND SPOILER ACTUATOR CASTING CRACKED, LEFT WING. REPLACED ACTUATOR CASTING PER SRM 51-30-01.

Part: VANE — WORN (TE FLAP) · airframe 60,538 hrs · 31,565 cycles

FLAP VANE LEADING HAS WEAR AT OUTBOARD FLAP INBOARD HINGE. INSTALLED DOUBLER PER SRM 51-70-2.

Part: CASTING — CRACKED (SPOILER) · airframe 60,546 hrs · 31,571 cycles

GROUND SPOILER CASTING CRACKED. INSTALLED NEW SPOILER CASTING PER SRM 51-30-02.

Part: COMPUTER — FAILED (FLT GUIDANCE) · airframe 57,347 hrs

SDF INFLIGHT T1485/12MAY DCA TO DFW - DIGITAL FLIGHT GUIDANCE COMPUTER CIRCUIT BREAKER POPPED. AIRCRAFT BANKED TO RIGHT WHEN AUTOPILOT REENGAGED. LANDED SDF WITHOUT INCIDENT. REPLACED SWITCH A CIRCUIT BREAKER, NUMBER TWO DIGITAL FLIGHT GUIDANCE COMPUTER AND DIGITAL FLIGHT GUIDANCE MODE PANEL. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BATTERY PACK — INOPERATIVE (EMERGENCY LIGHTS) · airframe 56,864 hrs

LGA - EMERGENCY LIGHTS AT OVERHEAD TAILCONE INOPERATIVE. REPLACED BATTERY PACK AT OVERHEAD RIGHT AFT LAVATORY FOR EMERGENCY LIGHTS AT OVERHEAD TAILCONE. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: PLACARD — MISSING (CABIN) · airframe 56,864 hrs

LGA - EMERGENCY EXIT PLACARD MISSING. REPLACED PLACARD FOR EMERGENCY EXIT. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BATTERY — INOPERATIVE (FLASHLIGHT) · airframe 56,835 hrs

TPA - EMERGENCY FLASHLIGHT AT LOWER LEFT NUMBER ONE DOOR INOPERATIVE. REPLACED BATTERY FOR EMERGENCY FLASHLIGHT AT LOWER LEFT NUMBER ONE DOOR. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BATTERY PACK — INOPERATIVE (EMERGENCY LIGHTS) · airframe 56,231 hrs

LGA - EMERGENCY LIGHTS AT FIRST CLASS INOPERATIVE. REPLACED BATTERY PACK FOR EMERGENCY LIGHTS AT FIRST CLASS. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BATTERY PACK — INOPERATIVE (EMERGENCY LIGHT)

LGA - EMERGENCY LIGHTS AT FORWARD ENTRY DOOR INOPERATIVE. REPLACED BATTERY PACK FOR EMERGENCY LIGHTS AT FORWARD ENTRY DOOR. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: SHROUD — BROKEN (CABIN)

DFW - SEAT MOUNTED EMERGENCY LIGHT AT SEAT 13D HAS SHROUD BROKEN. REPLACED SEAT MOUNTED EMERGENCY LIGHT SHROUD AT SEAT 13D. SYSTEM GROUND CHECKED NORMAL OPERATION.

Part: BRACKET — CRACKED (FUSELAGE)

TUL - FOUND TORSION BRACKET CRACKED BELOW AFT STAIR LEFT UPLOCK ACTUATOR. REMOVED CRACK ANGLE BRACKET AND INSTALLED FABRICATED ANGLE BRACKET. (M)

Part: STIFFENER — CRACKED (FUSELAGE)

TUL - FOUND SHEAR TIE STIFFENER CRACKED, AFT SIDE OF 1451 FRAME, AT LONGERON 2R. REMOVED CRACKED SHEAR TIE STIFFENER. INSTALLED NEW STIFFENER PER SRM 51-00-00. (M)

Part: SKIN — CRACKED (FUSELAGE)

TUL - FOUND FUSELAGE SKIN CRACKED AROUND RIVET ABOVE LEFT ENGINE PYLON, STATION 1380, LONGERON 12L. STOP DRILLED CRACK. INSTALLED DOUBLER REPAIR PER SRM 53-01-00 PAGE 9, FIG 2 SHEET 3. (M)

Part: ENGINE — FAILED (NR 2)

IND - FLT 772 - EN ROUTE DFW-LGA - DURING CRUISE AT 37,000 FEET, RIGHT ENGINE FAILED. N2 SUDDENLY WENT TO ZERO AND OIL PRESSURE WENT TO ZERO. OIL QUANTITY WAS OVER 12 QUARTS. NO FIRE INDICATIONS. DIVERTED AND LANDED IND WITHOUT INCIDENT. REPLACED NR 2 ENGINE. (M)

Part: WIRE — LOOSE (CABIN)

DFW - DURING OVERNIGHT MAINTENANCE, PASSENGER DOOR EMERGENCY EXIT LIGHTS DIM. TIGHTENED EMERGENCY EXIT LIGHT WIRE CONNECTION. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: BATTERY — OUT OF ADJUST (CABIN)

DFW - DURING OVERNIGHT MAINTENANCE, OVERWING EMERGENCY EXIT LIGHTS DIM. ADJUSTED EMERGENCY EXIT LIGHT BATTERY. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: BATTERY — DISCHARGED (CABIN)

DFW - DURING OVERNIGHT MAINTENANCE, AFT CABIN EMERGENCY EXIT LIGHTS INOPERATIVE. REPLACED AFT CABIN EMERGENCY EXIT LIGHTS BATTERY. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: LIGHT — INOPERATIVE (CABIN)

DFW - DURING OVERNIGHT MAINTENANCE, EMERGENCY ENTRANCE EXIT LIGHTS INOPERATIVE. REPLACED EMERGENCY ENTRANCE EXIT LIGHT. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: SENSOR — DEFECTIVE (HEAT EXCHANGER)

DFW - FLT 1612 - EN ROUTE DFW-LIT, TAIL COMPARTMENT HIGH TEMPERATURE LIGHT ILLUMINATED. RETURNED DFW AND LANDED WITHOUT FURTHER INCIDENT. REPLACED TAIL COMPARTMENT HIGH TEMPERATURE SENSORS. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: THERMOSWITCH — DEFECTIVE (TAIL)

DFW - FLT 1009 - EN ROUTE DFW-PHX, SHORTLY AFTER TAKEOFF AND CLIMB TAIL COMPARTMENT HIGH LIGHT ''ON'' ILLUMINATED. CHECKLIST ACCOMPLISHED AND LIGHT EXTINGUISHED. AFTER SEVERAL MINUTES COMMENCED CLIMB AND LIGHT ILLUMINATED. LANDED DFW WITHOUT INCIDENT. REPLACCED LEFT TAIL COMPARTMENT THERMOSWITCH AND CLEANED BOTH FLAPPER DOORS. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: SENSOR — DEFECTIVE (NLG)

DFW - FLT 731 - EN ROUTE LGA-DFW - AFTER TAKEOFF, NOSE GEAR RED LIGHT ILLUMINATED. NOSE GEAR PEDESTAL PIN WAS RETRACTED. ACCOMPLISHED ABNORMAL PROCEDURES. LANDED DFW WITHOUT INCIDENT. REPLACE BOTH NOSE GEAR LOCK SENSORS. ACCOMPLISHED NOSE GEAR SWING. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: WIRE — FAILED (ROWS 3-6)

ORD - DURING OVERNIGHT MAINTENANCE EMERGENCY EXIT FLOOR PATH LIGHT AT ROWS 3D THROUGH 6D INOPERATIVE. REPLACED EMERGENCY EXIT FLOOR PATH LIGHT CONDUCTOR AT ROWS 3D THROUGH 6D. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)

Part: SENSOR — DEFECTIVE (NLG)

DFW - FLT 0746 - DURING DESCENT INTO DFW WITH LANDING GEAR UP, NOSE LANDING GEAR RED LIGHT ILLUMINATED WITH NO OTHER ABNORMAL INDICATIONS. LANDING GEAR EXTENDED NORMALLY AND AIRCRAFT LANDED DFW WITHOUT INCIDENT. DURING TROUBLESHOOTING, COOLED NLG LOCK SENSOR USING CIRCUIT COOLER AND NOSE GEAR RED LIGHT ILLUMINATED. REPLACED NLG LOCK SENSOR. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)

Part: SENSOR — DEFECTIVE (NLG)

DFW - FLT 1793 - EN ROUTE FLL/DFW DURING CRUISE, NOSE LANDING GEAR LIGHT ILLUMINATED WITH NO OTHER ABNORMAL INDICATIONS. AIRCRAFT PROCEEDED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED NLG UP PROXIMITY SENSOR. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)