N491SH

Part: DOOR — DAMAGED (THRUST REVERSER)

AFTER AIRCRAFT LANDED THRUST REVERSERS WERE EXTENDED BEFORE NOSE LANDING GEAR HAD BEEN CONTACT ON THE GROUND, SCRATCHING THE THRUST REVERSES LOWER DOORS OF BOTH ENGINES (LARGE: 12 INCH, WIDE 1.5 INCHES APPROX). PERSONNEL WAS SENT TO REPAIR THE DAMAGES. BOTH THRUST REVERSES LOWER DOORS WERE REPLACED IAW MM 78-30-04. DURING OVERNIGHT SERVICE, THRUST REVERSERS MECHANISMS WERE CHECKED FOR CONDITION AND OPERATION IAW MM 78-30-00, ALL CORRECT.(K)

Part: SWITCH — MALFUNCTIONED (ANTI-ICE SYS)

FLT 215 - HMO-GDL - AIRCRAFT ARRIVED WITH CAPTAIN REPORT 'L ICE PROTECT TEMP HI' LIGHTS TURN ON. DURING TRANSIT CHECK THE THERMOSTAT AND ANTICIPATOR WERE REPLACED IAW MM 36-10-00. AIRCRAFT WAS DISPATCHED AND AIR TURN BACK AS A CONSEQUENCE OF 'L ICE PROTECT TEMP HI' LIGHTS TURN O. THE HI TMEP SENSOR AND ELECTRONIC THERMAL SW WERE SWAPPED. ADDITIONALLY, THE ANTICIPATOR WAS ADJUSTED AND ENGINES WERE STARTED IT AT 1.8 EPR IAW MM 30-10-06/08, 71-00-00, ALL TESTS CORRECT. (M)

Part: PULLEY — FAILED (SLAT DRIVE)

DURNG SLATS CABLE ADJUSTMENT WAS FOUND RUBBING BETWEEN CABLE PULLEYS OF SLAT NR '0', LOCATED IN THE RT OF THE SLAT DRIVE MECHANISM. BOTH PULLEYS WERE REPLACED AND GAINED ENOUGH SEPARATION. CABLE DEFLECTION WAS MEASURED, FOUNDED 25/34 INCHES, WITHIN LIMITS IAW MM CHAPTER 27-00-00 PATE 208A. (M)

Part: VALVE — FAILED (LEFT)

DURING COCKPIT CHECK THE CAPTIAN FOUND PROBLEMS WITH (AUTO LAND) BUTTON AND LEFT PRESSURE REGULATOR VALVE. THE BUTTON WAS DEFERRED BY MEL CATEGORY C AD THE VALVE WAS REPLACED IAW MM.

Part: TRANSMITTER — FAILED (HYD PRESSURE)

DURING CREW CABIN REVISION, CAPTAIN REPORTED LEFT ENGINE HYDRAULIC PUMP OUT OF SERVICE WITH 3000 PRESSURE INDICATION. LT TRANSMITTER HYDRAULIC PRESSURE WAS REPLACED AND IT WAS PERFORMED OPERATIONAL TEST WITH ZERO PRESSURE INDICATION, IAW MM, TESTS CORRECT.

Part: SOCKET — BURNED (NR 2 OVEN)

AIRCRAFT ACCOMPLISHED AN UNSCHEDULED LANDING, SMOKE IN FORWARD GALLEY. DURING CRUISE WAS DETECTED SMOKE IN PASSENGERS CABIN FROM THE UPPER PART OF THE FORWARD GALLEY OVENS A SMOKE WAS INCREASED WHEN THE SYSTEM WAS SHUTOFF. OVEN NR 2 WAS CHECKED BY CONDITION AND WAS DETECTED THAT SOCKET HAD BURNED RESISTANCE, REMAINING OVEN INOPERATIVE IAW MM. THE CIRCUIT BREAKER WAS ASSURED IN OPEN POSITION AND OVEN WAS CANCELLED AND IDENTIFIED WITH AN INOPERATIVE TAG. OVEN WAS CHANGED.

Part: INDICATOR — FAILED (COCKPIT)

AIRCRAFT RETURNED TO PLATFORM DUE TO FIRST OFFICER ALTIMETER OFF FLAG. ALTIMETER WAS RESET BUT FLAG CONTINUES. BOTH CADCS WERE INTERCHANGED, TESTS WERE PERFORMED IAW MM. AFTER TESTS, 130 FT DIFFERENCE BETWEEN ALTIMETERS APPEARS. PNEUMATIC CONNECTIONS WERE DRAINED AND CLEANED, ALL OPERATED IN A CORRECT WAY.

Part: FCU — FAILED (NR 1 ENGINE)

FLT 252 - MEX-GDL - AIRCRAFT RETURNED TO GATE DUE TO ACCELERATION FAILURE OF LEFT ENGINE. THE ACCELERATION CHAMBER WAS REVISED AND IT WAS PERFORMED A TRIM IAW MM 73-20-03 AND 73-11-00, TESTS OK. THE FCU OF LEFT ENGINE WAS REPLACED, TRIM WAS PERFORMED, TESTS OK, IAW MM 73-12-02, 71-00-01, 72-00-00. (M)

Part: FLOW VALVE — FAILED (COMPASS)

PILOT REPORTED A DIFFERENCE OF 6 DEGREES BETWEEN COMPASS AND RADAR WITH AN INDICATION FAILURE AND FLIGHT DIRECTORS OUT OF SERVICE IN TAKE OFF. DUE TO SUCH A FAILURE, A CHANGE OF EQUIPMENT WAS REQUESTED. THE FLOW VALVE OF THE COMPASS SYSTEM WAS REPLACED, IAW MM, TEST OK.

Part: SWITCH — FAILED (STALL COMPUTER)

AIRCRAFT RETURNED TO PLATFORM AS DUE TO AUTO SLAT FAIL LIGHT, THE STALL COMPUTER WAS REPLACED AND FAILURE CONTINUED, THE CONNECTORS OF STALL COMPUTER WERE CLEANED AND BOTH ACTUATOR CONNECTORS WERE RESEATED, TESTS WERE PERFORMED OK. DURING TAXI THE SAME LIGHT ILLUMINATED. THE ACTURATORS WERE FOUND WITH EXCESSIVE GREASE IN SLAT DRUM CAUSING FAILURE. SENSORS D1-55 AND D1-56 IN THE DRUM WERE CLEANED. SYSTEM WORKING CORRECTLY.

Part: DUCT — LEAKING (PNEUMATIC SYS)

FLT 489 - SJD-ACA - AIRCRAFT RETURNED TO PLATFORM AS CONSEQUENCES OF HIGH TEMPERATURE IN ENGINE NR 2 (470 GRADES), ENGINE WAS STARTED WITH A PNEUMATIC POWER GETTING 380 GRADES. DURING OVERNIGHT SERVICE WERE REPAIRED TWO PNEUMATIC LINES WITH LEAKS, TESTS WERE PERFORMED IAW MM 71-00-00. (M)

Part: FILTER — DIRTY (FUEL CONTROL)

FLT 430 - PVR-LAX - CAPTAIN REPORTED HIGH TEMPERATURE AT ENGINE STARTING, THE ENGINE STARTING WAS PERFORMED THREE TIMES, AT THIS LAST TIME THE STARTING WAS INSIDE THE PARAMETERS. AIRCRAFT STARTED THE TAXI, HOWEVER IT RETURNED TO PLATFORM AS CONSEQUENCE OF AN ENGINE TEMPERATURE INCREASE UNTIL 500 DEGREES CELSIUS. THE FILTER OF THE FCU AND OF THE PYD WAS REMOVED, AND WAS VERIFIED THE CHIP DETECTOR. TESTS OK. (M)

Part: WARNING SYSTEM — MALFUNCTIONED (COCKPIT)

FLT 180 - MLM-HMO - DURING TAXI, CAPTAIN INFORMED THAT DC BUS OFF LIGHT IS ON. RESET THE CIRCUIT BREAKER, LIGHT WAS NOT OFF. AIRCRAFT RETURNED TO PLATFORM. BOTH BATTERIES WERE DISCONNECTED AND CONNECTED, RESET THE RELAYS R2-21 AND R2-326, TEST OK, IAW MM 24-30-03. (M)

Part: MODULE — FAILED (LP TURBINE)

RECEIVED AT REPAIR STATION WITH UNCONTAINED TURBINE FAILURE. OPERATOR REPORTED THAT FAILURE OCCURED DURING AN APPROACH TO AIRPORT. AIRCRAFT ENCOUNTERED WINDSHERE WHEN AN ENGINE OVERBOOSTED. FAILURE OCCURE TO ENGINE 2 WHEN CUT BACK IN POWER. UNDER INVESTIGATION.