N14573

Part: ROD — CORRODED (ZONE 700) · airframe 41,150 hrs · 32,299 cycles

LH AND RH FWD AND AFT MLG DOOR RODS HAVE SIGNS OF CORROSION. CORRECTIVE ACTION IS TO REPLACE WITH NEW RODS IAW EMB 145 AMM 32-10-06. AVMAX WO 81031 WC 7059

Part: FLOORBEAM — CORRODED (ZONE 100) · airframe 41,150 hrs · 32,299 cycles

LH FLOOR BEAM HAS SIGNS OF CORROSION FROM FR18 TO FR23. CORRECTIVE ACTION IS TO REMOVE AND REPLACE WITH NEW BEAM IAW EMB 135/145 SRM 51-40-02. AVMAX WO 81031 WC 1173.

Part: FLOOR SUPPORT — CORRODED (ZONE 100) · airframe 41,150 hrs · 32,299 cycles

LH FLOOR SILL AT FR22 HAS SIGNS OF CORROSION. CORRECTIVE ACTION IS TO REMOVE AND REPLACE WITH NEW FLOOR SILL IAW EMB 135/145 SRM 51-40-02. AVMAX WO 81031 WC1174.

Part: DOOR SILL — CORRODED (ZONE 100) · airframe 41,150 hrs · 32,299 cycles

SERVICE DOOR SILL HAS SIGNS OF CORROSION. CORRECTIVE ACTION IS TO REMOVE AND REPLACE DOOR SILL WITH NEW DOOR SILL IAW EMB 145 SRM 51-40-02. AVMAX WO 81031 WC1170.

Part: NONE — CORRODED (ZONE 100) · airframe 41,150 hrs · 32,299 cycles

RH FLOOR SILL HAS SIGNS OF CORROSION FROM FR18 TO FR20. CORRECTIVE ACTION IS TO REMOVE AND REPLACE WITH NEW SILL IAW EMB 145SRM 51-40-02. AVMAX WO 81031 WC 1168

Part: MOUNT — CORRODED (ZONE 100) · airframe 41,150 hrs · 32,299 cycles

FWD GALLEY MOUNT BASE (ON THE GALLEY) IS CORRODED OUT OF LIMITS. CORRECTIVE ACTION: REMOVED CORRODED MOUNT BASE AND REPLACE WITH A SERVICEABLE BASE IAW EMB 145 SRM 51-40-02.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 41,014 hrs · 32,200 cycles

PILOT REPORTED CEILING EMER LIGHT BY EXIT ROW NOT ILLUMINATING. MX RELAMPED CEILING EMER LIGHT OPS CHECK GOOD. A/C WAS APPROVED FOR RETURN TO SERVICE.

Part: SIGN — INOPERATIVE (EMERGENCY LIGHTS) · airframe 40,519 hrs · 31,788 cycles

DURING MX INSPECTION THE EMERGENCY LIGHTS ON THE FWD AND AFT SECTION OF THE AIRCRAFT WERE FOUND INOP. MX REMOVED AND REPLACED FWD EMERGENCY EXIT MARKING LIGHT AT MAIN DOOR AND RESECURED #2 BATTERY POWER SUPPLY WITH OPERATIONAL CHECK GOOD. A/C WAS APPROVED FOR RETURN TO SERVICE.

Part: CONTROLLER — FAULTY (CABIN PRESSURE) · airframe 39,467 hrs · 30,912 cycles

PILOT REPORTED COMING THROUGH 7000MSI LOST ALL PRESSURIZATION WITH NO EICAS WARNINGS PACKS WOULD NOT RESET. MX REMOVED AND REPLACED DIGITAL CONTROLLER WITH OPERATIONAL CHECK GOOD. A/C WAS APPROVED FOR RETURN TO SERVICE.

Part: BATTERY — DISCHARGED (CABIN) · airframe 39,322 hrs · 30,789 cycles

DURING MX INSPECTION THE FLOOR EMERGENCY LIGHTS SEAT 7A TO 1A WERE DISCOVERED INOPERATIVE. MX REMOVED AND REPLACED NR 1 EMERGENCY LIGHT BATTERY WITH OPERATIONAL CHECK GOOD. A/C WAS APPROVED FOR RETURN TO SERVICE.

Part: ACM — SMOKE (NR 2) · airframe 39,227 hrs · 30,716 cycles

THE CREW REPORTED SMOKE/ODOR FROM #2 PACK. MAINTENANCE REPLACED THE #2 AIR CYCYLE MACHINE. OPERATIONAL CHECKS WERE GOOD.

Part: CONTROLLER — INOPERATIVE (CABIN) · airframe 38,034 hrs · 29,781 cycles

GRK - THE CREW REPORTED THAT THE CABIN OVERHEAD LIGHTS WOULD NOT TURN OFF, ARE STUCK IN THE ON POSITION WITH A STRONG ELECTRICAL SMELL. THE AIRCRAFT WAS FERRIED TO IAH WHERE MAINTENANCE REMOVED AND REPLACED THE CABIN LIGHT CONTROLLER, OPERATIONALLY TESTED WITH NO DEFECTS NOTED AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SKIN — TORN (FUSELAGE)

DURING POST FLIGHT INSPECTION MAINTENANCE DISCOVERED A HOLE/TEAR IN THE FUSELAGE SKIN UNDER THE NUMBER TWO ENGINE FROM APPARENT GROUND DAMAGE. THE DAMAGE WAS LOCATED BETWEEN FRAME 66-07 STRINGER 14-15 RIGHT. MAINTENANCE REMOVED THE DAMAGED SECTION OF SKIN AND PERFORMED A DOUBLER REPAIR. PRESSURIZATION CHECKS PASSED WITH NO DEFECTS AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: DOOR SILL — CORRODED (FRAME 19) · corrosion level 2 · airframe 37,618 hrs · 31,994 cycles

GALLEY SERVICE DOOR SILL CORRODED BEYOND LIMITS. MAINTENANCE REPAIRED GALLEY SERVICE DOOR SILL IAW SRM 53-21-10.

Part: FITTING — CRACKED (FUSELAGE) · airframe 37,618 hrs · 31,994 cycles

DURING C CHECK SHEAR CLIP AT FRAME 79 AND STRINGER 3R WAS FOUND CRACKED. MAINTENANCE REPLACED SHEAR CLIP AT FRAME 79 AND STRINGER 3R.

Part: FITTING — CRACKED (FUSELAGE) · airframe 37,618 hrs · 31,994 cycles

DURING C CHECK INSPECTION FOUND SHEAR CLIP AT FRAME 80 AND STRINGER 7L CRACKED. MAINTENANCE REPLACED SHEAR CLIP AT FRAME 80 AND STRINGER 7L.

Part: FITTING — CRACKED (FUSELAGE) · airframe 37,618 hrs · 31,994 cycles

DURING C CHECK INSPECTION FOUND SHEAR CLIP AT FRAME 79 AND STRAINGER 3L CRACKED. MAINTENANCE REPLACED SHEAR CLIP AT FRAME 79 AND STRINGER 3L.

Part: SKIN — CRACKED (FRAME 75) · airframe 37,618 hrs · 31,994 cycles

LEFT REAR FUSELAGE SKIN CRACKED AT FRAME 75, BETWEEN STRINGERS 1 AND 2L. MAINTENANCE REPAIRED THE SKIN IAW SRM 53-31-01.

Part: FLOOR SUPPORT — CORRODED (FRAMES 31-32) · corrosion level 2 · airframe 37,618 hrs · 31,994 cycles

DURING A C CHECK INSPECTION, FOUND THE LEFT FLOOR SUPPORT CORRODED AT FRAME 31-32. MAINTENANCE REPLACED THE FLOOR SUPPORT.

Part: SKIN — CRACKED (FRAME 75) · airframe 37,618 hrs · 31,994 cycles

DURING A C CHECK INSPECTION, A CRACK WAS FOUND IN THE REAR FUSELAGE SKIN AT FRAME 75, BETWEEN STRINGERS 1R AND 2R. MAINTENANCE REPAIRED THE SKIN IAW SRM 53-31-01.

Part: ACTUATOR — FAULTY (HORIZONTAL STAB) · airframe 37,617 hrs · 29,450 cycles

THE CREW REPORTED AN AUTO TRIM FAIL INFLIGHT WITH PITCH TRIM GOING TO DASHES ON INDICATION. MAINTENANCE INSPECTED AND REPLACED THE HORIZONTAL STAB ACTUATOR IAW 27-40-02. OPS CHECKED GOOD.

Part: INVERTER — INOPERATIVE (EMERGENCY LIGHTS) · airframe 35,123 hrs · 27,483 cycles

PILOT REPORTED THE EMERGENCY LIGHT OVER THE FWD FA IS NOT ILLUMINATING. MX REMOVED AND REPLACED THE NR 1 INVERTER. OPS CHECKED GOOD. RETURNED TO SERVICE.

Part: BATTERY PACK — DISCHARGED (EMERGENCY LIGHTS) · airframe 31,795 hrs · 24,816 cycles

THE CREW REPORTED THAT THE FWD EMERGENCY LIGHTS WERE FOUND TO BE INTERMITTENT. MAINTENANCE R & R THE AFFECTED EMERGENCY LIGHT BATTERY IN THE GALLEY, OPERATIONALLY TESTED WITH NO DEFECTS NOTED, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.

Part: UNKNOWN — HAZE (COCKPIT-CABIN) · airframe 29,041 hrs · 22,671 cycles

THE CREW REPORTED LIGHT HAZE IN THE COCKPIT/CABIN THAT LASTED ABOUT 15 MINUTES IN CLIMBOUT. OPEN

Part: LIGHT — INOPERATIVE (CABIN) · airframe 28,631 hrs · 22,356 cycles

DURING MX INSPECTION THE ROW 8 & 9 EMERGENCY EXIT FLOOR LIGHT WAS FOUND INOPERATIVE. MX R & R THE EMERGENCY LIGHT FLOOR STRIP AND PERFORMED OPS CHECK GOOD. ACFT WAS APPROVED FOR RETURN TO SERVICE.

Part: YOKE — CRACKED (NR 1 PYLON) · airframe 28,224 hrs · 22,039 cycles

NR 1 PYLON LOWER FORWARD YOKE CRACKED. R & R YOKE.

Part: YOKE — CRACKED (NR 2 PYLON) · airframe 28,224 hrs · 22,039 cycles

NR 2 PYLON LOWER FORWARD YOKE CRACKED. R & R YOKE.

Part: SKIN — CRACKED (ZONE 200) · airframe 26,468 hrs · 20,690 cycles

DURING ROUTINE CHECK, A POSSIBLE CRACK IN THE AFT FUSELAGE SKIN WAS FOUND BY FRAME 78 AND STRINGER 6R. THE CRACK WAS VERIFIED WITH EDDY CURRENT. MX REAMED OUT THE SKIN CRACK AND PERFORMED A BUSHING REPAIR IAW ETD 2013-145-012146. THE ACFT WAS APPROVED FOR RETURN TO SERVICE.

Part: FIREWALL — CRACKED (APU BAY) · airframe 25,860 hrs · 20,226 cycles

A .2500" CRACK WAS FOUND ON THE APU FIREWALL EDGE OF REINFORCED REGION LAST RIVET ABOVE STRINGER 19R AREA. PERFORMED REPAIR IAW SRM 53-32-13, TABLE 201, ITEM 5. ACFT WAS APPROVED FOR RETURN TO SERVICE.

Part: BATTERY PACK — DISCHARGED (EMERGENCY LIGHTS) · airframe 24,583 hrs · 19,181 cycles

EMERGENCY LIGHTS WERE FOUND TO BE LEFT ON. R & R EMERGENCY LIGHT BATTERY PACKS WITH OPS CHECK SUCCESSFUL. ACFT WAS APPROVED FOR RETURN TO SERVICE.

Part: BATTERY PACK — DISCHARGED (EMERGENCY LIGHTS) · airframe 23,384 hrs · 18,219 cycles

THE CREW REPORTED THAT THE EMERGENCY LIGHT AROUND THE GALLEY AND SEAT 3BC DOES NOT STAY ON. R & R THE EMERGENCY LIGHT BATTERY PACK OVER THE SERVICE DOOR, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.

Part: HYDRAULIC SYSTEM — LOW (NR 1) · airframe 22,333 hrs · 17,460 cycles

SHV - HYDRAULIC NR 1 LOW QUANTITY MESSAGE IN FLIGHT. SERVICED NR 1 HYDRAULIC SYSTEM WITH SKYDROL IAW EMB 145 AMM 12-13-01, SERVICED NR 1 HYDRAULIC ACCUMULATOR IAW EMB 145 AMM 12-13-02, RAN ENG IAW RRMM 72-00-00 AND NR 1 HYDRAULIC SYSTEM IAW EMB 145 AMM 29-10-00. VERIFIED NORMAL OPERATION WITH NO LEAKS OR FLUID LOSS. AIRCRAFT WAS RETURNED TO SERVICE.

Part: UNKNOWN — ODOR · airframe 22,202 hrs · 17,349 cycles

THE CREW REPORTED AT FULL POWER SETTINGS, PACK 1 PRODUCES A BURNING OIL SMELL. MAINTENANCE INSPECTED AND RAN BOTH ENGINES AT THRUST SETTINGS WITH BOTH PACKS ON AND COULD NOT DUPLICATE THE SMELL. THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: MONITOR — INOPERATIVE (VIBRATION SYS) · airframe 22,162 hrs · 17,316 cycles

PNS - DURING TAKEOFF THE CREW REPORTED ENGINE ONE SPIKED AT 2.5. THE AIRCRAFT RETURNED TO PNS WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE ENGINE VIBRATION MONITOR, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SKIN — GOUGED (RT WING) · airframe 20,899 hrs · 16,373 cycles

SHV - RON AC N14573 RT LOWER O/B WING HAS GOUGES ON SKIN BETWEEN RIBS 23 AND 24. MAINTENANCE PERFORMED REPAIR ON RT LOWER O/B WING BETWEEN RIBS 23 AND 24 IAW ETD 2011-145/03344. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: TRANSPONDER — FAULTY (COCKPIT) · airframe 19,078 hrs · 14,754 cycles

ORD FLT 5757 THE CREW REPORTED BOTH TRANSPONDERS WERE INOP. THE FLIGHT DIVERTED INTO MCI AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE NR 2 RCZ. OPERATIONAL CHECKS WERE GOOD.

Part: TRANSPONDER — INOPERATIVE (COMM SYS) · airframe 19,078 hrs · 14,754 cycles

IAH - FLIGHT 5757, THE CREW REPORTED THAT ATC WAS UNABLE TO READ TRANSPONDER 1. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND REMOVED AND REPLACED THE NUMBER TWO INTEGRATED COMM TRANSPONDER UNIT, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: ENGINE — VIBRATION (NR 2) · airframe 19,058 hrs · 14,737 cycles

CLE FLT 5718 THE CREW REPORTED THE NR 2 ENGINE HP VIB WAS AT 1.1 IPS IN FLIGHT, HAD TO REDUCE THRUST TO MAINTAIN A MAX OF 1.1 IPS IN CRUISE. MAINTENANCE INSPECTED AND REPLACED THE NR 2 ENGINE. OPERATIONAL CHECKS WERE GOOD.

Part: O-RING — FAULTY (BLEED AIR SYS) · airframe 18,601 hrs · 14,313 cycles

ORD FLT 5760 THE CREW REPORTED A NR 1 BLEED LEAK. RETURNED TO ORD AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE BLEED O-RINGS AT JOINT NR 15 ON THE NR 1 BLEED SYSTEM. OPERATIONAL CHECKS WERE GOOD.

Part: BATTERY — OVERHEATED (NR 2) · airframe 18,577 hrs · 14,292 cycles

ORD FLT 5741 THE CREW REPORTED A BATTERY NR 2 OVERTEMP INDICATION ON DESCENT IN ORD. MAINTENANCE INSPECTED AND REPLACED THE NR 2 MAIN BATTERY AND OPERATIONAL CHECKS WERE GOOD.

Part: COFFEEMAKER — DIRTY (GALLEY) · airframe 18,117 hrs · 13,929 cycles

CLE FLT 2927 THE CREW REPORTED THE LEFT COFFEE POT WAS SMOKING WHILE BREWING. MAINTENANCE INSPECTED AND CLEANED BURNT COFFEE OFF THE LEFT COFFEE POT BURNER. OPERATIONAL CHECKS WERE GOOD.

Part: UNKNOWN — ODOR (CABIN) · airframe 17,106 hrs · 13,156 cycles

FLIGHT 2286 - EWR - FLIGHT CREW REPORTED FUEL SMELL IN CABIN DURING APU START. MX EWR PERFORMED APU START AND RUNNING PACKS. MX COULD NOT DUPLICATE THE ODOR. ACFT WAS APPROVED TO RETURN TO SERVICE.

Part: WARNING SYSTEM — MALFUNCTIONED (HYDRAULIC SYSTEM) · airframe 17,065 hrs · 13,216 cycles

TYS - CREW REPORTED A STEADY DIMINISHING NR 1 HYD FLUID LEVEL WITH CONCERN OF LOSS OF HYD SYSTEM UPON ARRIVAL TO IAH; SOCC DECISION TO DIVERT FLIGHT INTO BNA FOR BRIEF HYD INSPECTION AND SERVICING. EMERGENCY NOT DECLARED. MAINTENANCE PERFORMED A GVI ON THE NR 1 HYD SYSTEM WITH THE ELECTRIC PUMP, NO LEAKS NOTED AND WAS RELEASED TO SERVICE.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 16,887 hrs · 12,990 cycles

RIC - MX - DURING ROUTINE MAINTENANCE, MX FOUND RIGHT AFTERWARD EMERGENCY LIGHT INOPERATIVE. MX REMOVED AND REPLACED LIGHT BULB AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. AIRCRAFT WAS APPROVED TO RETURN TO SERVICE.

Part: INVERTER — FAULTY (EMERGENCY LIGHTS) · airframe 160,004 hrs · 12,327 cycles

DURING ROUTINE MAINTENANCE THE NR 4 & NR 5 FLOOR AISLE PATH EMERGENCY LIGHT STRIPS WERE FOUND INOPERATIVE. MAINTENANCE INSPECTED AND REPLACED THE NR 5 EMERGENCY LIGHT INVERTER. OPERATIONAL CHECKS WERE GOOD.

Part: WIRE — CHAFED (COCKPIT) · airframe 15,173 hrs · 11,712 cycles

EWR-CVG - COCKPIT READING LIGHTS CIRCUIT BREAKER POPPED WHEN USING CA SIDE YOKE LIGHT THAT CAUSED A SMOKE SMELL IN COCKPIT. MX FOUND A CHAFED WIRE ON CAPTAINS YOKE READING LIGHT. A/C WAS RELEASED IAW NEF CB 02 CAT D CONTROL NR 157869.

Part: PROXIMITY SWITCH — INOPERATIVE (NLG DOOR) · airframe 10,728 hrs · 8,506 cycles

EWR LOG SQUAWK FLT 3128 SOUNDS LIKE NLG DOORS ARE OPEN IN FLT. MAINTENANCE FOUND NLG DOORS WERE NOT CLOSING. REMOVED AND REPLACED NLG DOOR SEQUENCE PROX SWITCH IAW EMB145 MM 32-61-01. OPS CHECK GOOD IAW EMB145 MM 32-30-00.

Part: RMU — BURNED OUT (NR 2) · airframe 4,632 hrs · 3,737 cycles

ALB - CREW REPORTED, BURNING SMELL FOLLOWED BY GOING BLANK NR 2 RMU. MAINTENANCE REMOVED AND REPLACED NR 2 RMU IAW AMM 23-81-01. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.

Part: FIREWALL — CRACKED (APU BAY) · airframe 3,964 hrs · 3,213 cycles

DURING C-CHECK THE APU FIREWALL WAS FOUND TO BE CRACKED AT THE UPPER RIGHT APU MOUNT. MAINTENANCE REMOVED THE DAMAGED AREA AND PERFORMED A DOUBLER REPAIR IAW EMB 145 SRM 53-32-13, SECTION 4 FIG 203. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: ANGLE — CORRODED (FUSELAGE) · airframe 3,964 hrs · 3,213 cycles

DURING C-CHECK THE LEFT RAMP ANGLE BETWEEN FRAMES 19 AND 20 WAS FOUND TO BE CORRODED. MAINTENANCE REMOVED, FABRICATED AND REPLACED THE AFFECTED ANGLE IAW EMB 145 SRM 51-30-00 AND EMB 145 SRM 51-40-02. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: FLOORBEAM — CORRODED (CABIN) · airframe 3,964 hrs · 3,213 cycles

SHV - DURING C-CHECK, THE LEFT FLOORBEAM WAS FOUND TO BE CORRODED AT FRAME 20. MAINTENANCE REMOVED THE DAMAGED AREA AND PERFORMED A SHIM FILLER REPAIR IAW EMB 145 SRM 53-21-10, FIG 201, SHEET 2. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SKIN — GOUGED (FUSELAGE) · airframe 3,964 hrs · 3,213 cycles

DURING C-CHECK THE RIGHT LOWER FUSELAGE SKIN WAS FOUND TO BE DENTED IN 4 PLACES, 3 OF THE DENTS WERE WITHIN LIMITS IAW EMB 145 SRM 53-22-01 AND THE 4TH DENT WAS FOUND TO BE GOUGED IN THE BOTTOM OF THE DENT. MAINTENANCE REMOVED THE DAMAGED AREA AND RECONTOURED THE DENT AREA AND INSTALLED A RIVET/WASHER REPAIR IAW EMB 145 SRM 51-30-01 AND EMB 145 SRM 53-22-01. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SILL — CORRODED (CABIN) · airframe 3,964 hrs · 3,213 cycles

DURING C-CHECK THE SERVICE DOOR CENTER SILL WAS FOUND TO BE CORRODED. MAINTENANCE REMOVED THE DAMAGED AREA AND PERFORMED A DOUBLER REPAIR IAW EMB 145 SRM 53-21-02. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: BATTERY PACK — DISCHARGED (CABIN) · airframe 3,700 hrs · 3,004 cycles

CREW REPORTED EMERGENCY LIGHTS FLASHING ON AND OFF DURING PREFLIGHT. MAINTENANCE REMOVED AND REPLACED ALL FOUR EMERGENCY LIGHT BATTERY PACKS IAW EMB145 MM 33-50-04, OPS CHECKED GOOD IAW EMB 145 33-50-00. PART NUMBER: 2013-1A, SERIAL NUMBERS: 81656, 84256, 73652, AND 84568.

Part: SWITCH — DIRTY (PITCH TRIM)

DURING CRUISE THE CREW REPORTED THAT THERE WAS A TOTAL PITCH TRIM FAILURE. THE AIRCRAFT RETURNED AND LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE INSPECTED THE PITCH TRIM SYSTEM, RESET CIRCUIT BREAKERS ASSOCIATED WITH THE PITCH TRIM SYSTEM, AND CLEANED THE THE FIRST OFFICER'S AUTOPILOT DISCONNECT SWITCH. THE PITCH TRIM SYSTEM WAS OPERATIONALLY TESTED AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: CONTROL UNIT — INOPERATIVE (COCKPIT)

FLIGHT 2856, THE CREW NOTED THAT THE LANDING GEAR DISAGREE APPEARED ON EICAS AFTER TAKEOFF AND THE LANDING GEAR WOULD NOT RETRACT. NOTE, HYDRAULIC QUANTITY AND PRESSURE INDICATION NORMAL. MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR ELECTRONIC UNIT, PERFORMED A OPERATIONAL CHECK, NO DEFECTS NOTED. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: LEVER — INOPERATIVE (COCKPIT)

FLIGHT 2856, THE CREW NOTED THAT THE LANDING GEAR LEVER DISAGREE MESSAGE APPEARED ON EICAS AFTER TAKEOFF AND THE LANDING GEAR WOULD NOT RETRACT. NOTE, HYDRAULIC QUANTITY AND PRESSURE INDICATION NORMAL. MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR CONTROL LEVER, PERFORMED A OPERATIONAL CHECK, NO DEFECTS NOTED. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PROXIMITY SWITCH — FAULTY (MLG) · airframe 736 hrs · 610 cycles

CREW REPORTED, LANDING GEAR WILL NOT RETRACT AFTER TAKEOFF. MAINTENANCE REMOVED AND REPLACED RIGHTHAND LANDING GEAR PROXIMITY SWITCH IAW EMB145 AMM 32-63-01. OPS CHECKED GOOD. PERFORMED RETRACTION AND EXTENSION OF LANDING GEAR SYSTEM IAW 32-32-00. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.

Part: LANDING GEAR — COLLAPSED (NOSE) · airframe 385 hrs · 313 cycles

NLG COLLAPSED AFTER PUSH BACK. R & R OLEO STRUT, MAIN DRAG LEG AND LOCKING STRUT, 2NDARY DRAG LEG & LOCKING STRUT, DWN TENSION SPRINGS, DWN-UNLCK ACTUATOR, ACTUATING CYLINDER. R & R MLG CONTROL LEVER , LGEU, MLG SOLENOID VALVE & CHECK VALVE. DFDR & CMC DWNLOADED, REMOVED TOW BAR & INSPECTED, NLG BAY & OLD NLG ASSY INSPECTED. NO DEFECTS NOTED BEFORE REMOVAL. INSPECT NLG DOORS & ATTACH FITT, NO DEFECTS NOTED. DREW SAMPLES FROM NR 1 HYD SYS. MANUFACTURE REQUEST A SIM PUSHBACK & TAXI, OPS CHECKED OK, & MANUFACTURE REQUESTED CHECK OF WIRING OF MLG EXTEND/RETRACT SYS IAW WIRING MANUAL. A/C FERRIED TO IAH TO COMPLY WITH REQUEST. IAH MAINT REPORTED NO DEFECTS OR FAULTS. AIRCRAFT RETURNED TO SERVICE. SDR OPEN.