N16232

Part: SOLENOID — INOPERATIVE (LANDING GEAR)

THE GEAR LATCH WOULD NOT RELEASE AFTER TAKEOFF. THE GEAR HANDLE WOULD NOT MOVE TO THE UP POSITION. CIRCUIT BREAKERS WERE PULLED AND RESET IAW QRH PROCEDURES, BUT WITH NO CHANGE. THE AIRCRAFT WAS RETURNED TO GSO WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE LANDING GEAR CONTROL LEVER LOCK SOLENOID AT FAULT. THE SOLENOID WAS REMOVED AND REPLACED.

Part: HYD PUMP — LEAKING (NR 2 ENGINE)

THE A-SYSTEM HYDRAULIC QUANTITY DROPPED TO ZERO FOLLOWED BY LOSS OF PRESSURE ON NR 2 ENGINE WHILE EN ROUTE. AIRCRAFT WAS RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE NR 2 ENGINE DRIVEN HYDRAULIC PUMP LEAKING. THE PUMP WAS REMOVED AND REPLACED, THE HYDRAULIC RESERVOIR WAS SERVICED, THE ENGINE WAS RUN AND ALL OPERATION AND LEAK CHECKS WERE GOOD.

Part: PCU — INOPERATIVE (RUDDER)

THE AIRCRAFT HAD AN UNCOMMANDED ROLL TO THE RIGHT ON TAKEOFF. FIFTEEN TO TWENTY DEGREES OF LEFT AILERON WAS REQUIRED TO MAINTAIN LEVEL FLIGHT. ALL OTHER INDICATIONS WERE NORMAL. THE AIRCRAFT CONTINUED TO CLE WHERE IT LANDED WITHOUT FURTHER PROBLEM. THE YAW DAMP COUPLER WAS REMOVED AND REPLACED. THE YAW DAMPER WAS PLACED ON PLACARD. THE SDR WILL REMAIN OPEN PENDING INVESTIGATION. *S/D* MAINTENANCE FOUND THAT THE RUDDER PCU TRANSFER VALVE HAD AN OPEN AT PIN 5 AND 6. THE RUDDER PCU WAS REMOVED AND REPLACED AND THE PLACARD ON YAW DAMPER WAS REMOVED. VENDOR TEARDOWN FOUND NO TROUBLE WITH THE YAW DAMP COUPLER. VENDOR TEARDOWN OF THE RUDDER PCU FOUND THE SERVO VALVE DEFECTIVE. ADDITIONAL TEARDOWN FINDINGS

Part: STRAP — CORRODED (BS 420-500)

INSPECTION FOUND STRAP AT C-1 DOOR THRESHOLD CORRODED, STA 420 TO 500. A NEW STRAP WAS FABRICATED AND INSTALLED IAW SRM 51-40-3 AND 51-30-2.

Part: SKIN — CRACKED (RT TE FLAP)

INSPECTION FOUND A 1 INCH CRACK IN UPPER SKIN OF RT WING INBOARD AFT FLAP. THE CRACKED AREA WAS CUT OUT, A FILLER AND DOUBLER REPAIR WAS FABRICATED AND INSTALLED IAW SRM 51-10-2 AND MM 51-20-0.

Part: FLOORBEAM — CORRODED (BS 294)

INSPECTION FOUND FLOORBEAM UPPER CHORD CORRODED AT STA 294, RBL 40 TO 55. THE CORRODED SECTION OF CHORD WAS CUT OUT, A REPLACEMENT CHORD AND L-ANGLE DOUBLERS WERE FABRICATED AND INSTALLED IAW SRM 53-10-9, 52-20-1 AND 52-10-2.

Part: FLOORBEAM — CORRODED (BS 328)

INSPECTION FOUND FLOORBEAM CORRODED AT STA 328. THE FLOORBEAM WAS REMOVED AND A NEW FLOORBEAM WAS FABRICATED AND INSTALLED IAW SRM 53-10-9 AND MM 51-20.

Part: BRACKET — CRACKED (VERT STAB)

INSPECTION FOUND A 2 INCH CRACK IN RT ANGLE BRACKET AT REAR SPAR OF VERTICAL STABILIZER. THE CRACK WAS STOP DRILLED AND A NEW ANGLE WAS FABRICATED AND INSTALLED IAW SRM 51-40-3, 51-10-2 AND 51-30-2.

Part: CHANNEL — CRACKED (BS 500)

THE STRINGER TO FLOOR BEAM ATTACHMENT U-CHANNEL HAD TWO 1 INCH CRACKS AT STA 500A, STRINGER 28R. A REPAIR WAS FABRICATED AND INSTALLED IAW SRM 51-20-1, FIGURE 7 AND 51-30-2.

Part: BRACKET — CRACKED (VERT STAB)

INSPECTION FOUND A 1.5 INCH CRACK IN LT ANGLE BRACKET AT REAR SPAR OF VERTICAL STABILIZER. THE CRACK WAS STOP DRILLED AND A DOUBLER WAS FABRICATED AND INSTALLED IAW SRM 51-00-0, 51-40-3, 51-10-2 AND 51-30-2.

Part: FRAME — CRACKED (BS 480)

INSPECTION FOUND A .5 INCH CRACK IN FRAME AT STA 480, BL 0. THE CRACK WAS REMOVED AND A DOUBLER AND FILLER WERE FABRICATED AND INSTALLED IAW SRM 53-10-4.

Part: INTERCOSTAL — CRACKED (BS 500)

INSPECTION FOUND A 1 INCH CRACK IN FORWARD CARGO PIT INTERCOSTAL AT STA 500, STRINGER 27L. THE INTERCOSTAL WAS REMOVED AND A NEW INTERCOSTAL WAS FABRICATED AND INSTALLED IAW SRM 51-20-1, 51-10-2 AND 51-30-2.

Part: FRAME — CRACKED (BS 480)

INSPECTION FOUND A 3 INCH CRACK IN FORWARD CARGO FRAME AT STA 480, S21L. THE CRACK WAS STOP DRILLED IAW SRM 51-10-6. REPAIR PARTS WERE FABRICATED AND INSTALLED IAW SRM 51-40-3, 51-30-2 AND 51-10-2.

Part: BLKHD STIFFENER — CRACKED (BS 727)

INSPECTION FOUND A .5 INCH CRACK IN RADIUS OF VERTICAL STIFFENER AT STA 727 BULKHEAD. A DOUBLER WAS FABRICATED AND INSTALLED IAW SRM 51-40-4, 51-10-2 AND 51-21.

Part: AUX TRACK — CRACKED (RT WING)

INSPECTION FOUND A .5 INCH CRACK IN MID AUXILIARY TRACK OF RT WING ABOVE NR 6 SLAT. A REPAIR WAS INSTALLED IAW SRM 51-30-2.

Part: SKIN — DENTED (FWD CARGO DOOR)

INSPECTION FOUND SEVERAL DENTS IN FORWARD CARGO DOOR SKIN. THE DENTED AREA WAS CUT OUT, A DOUBLER WAS FABRICATED AND INSTALLED IAW SRM 52-00-3, 51-30-2 AND 51-10-2.

Part: SKIN — CREASED (BS 1120)

INSPECTION FOUND A 3 INCH CREASE IN FUSELAGE SKIN AT STA 1120, BL 0. THE CREASED AREA WAS CUT OUT. A DOUBLER WAS FABRICATED AND INSTALLED IAW SRM 53-30-3.

Part: SLIDE — INOPERATIVE (L 1 DOOR)

THE L-1 DOOR EVACUATION SLIDE FAILED DEPLOYMENT TEST. THE COVER LANYARD WOULD NOT RELEASE AND THE SLIDE ONLY PARTIALLY INFLATED. THE SLIDE WAS REMOVED AND REPLACED IAW MM 25-61-30.

Part: WIRE — DAMAGED (CABIN)

A SECTION OF FORWARD CABIN EMERGENCY PATH LIGHTS WERE FOUND INOPERATIVE. THE WIRING AT FORWARD TRACK SECTION WAS REPAIRED IAW MM 33-50-0.

Part: SIGN — INOPERATIVE (CABIN)

THE SELF ILLUMINATING EXIT SIGN IN AFT CABIN FAILED ILLUMINOSITY CHECK. THE EXIT SIGN WAS REMOVED AND REPLACED.

Part: CHORD — CRACKED (BS 727)

GSO - INSPECTION FOUND A 2 INCH CRACK FROM FORWARD HOLE TO AFT HOLE OF RT CHORD AT STA 727, STR 18A. A REPAIR WAS ACCOMPLISHED IAW ECRA 5310-03165 AND EA 5310-02918. (X)

Part: HYD MODULE — INOPERATIVE (RT MLG)

MSY - FLT 1275 - THE RT MLG RED UNSAFE LIGHT REMAINED ILLUMINATED AFTER TAKEOFF WITH THE GEAR HANDLE IN THE UP POSITION. THE GEAR WAS CYCLED AND RED LIGHT EXTINGUISHED. THE RED LIGHT ILLUMINATED AGAIN WHEN THE GEAR HANDLE WAS PLACED IN THE OFF POSITION, BUT WENT OUT WHEN THE UP POSITION WAS SELECTED. MAINTENANCE REMOVED AND REPLACED THE RT MLG HYDRAULIC INSTALLATION MODULE. THE GEAR WAS CYCLED 15 TIMES WITH OPERATION AND INDICATIONS CHECKING GOOD. (X)

Part: HYD VALVE — LEAKING (A-HYD SYSTEM)

BWI - FLT 1555 - THE AIRCRAFT LOST THE 'A' SYSTEM HYDRAULIC QUANTITY SHORTLY AFTER TAKEOFF FROM BWI. THE AIRCRAFT WAS RETURNED TO BWI WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE 'A' SYSTEM HYDRAULIC MANUAL SHUT-OFF VALVE IN THE TAIL COMPARTMENT LEAKING. THE VALVE WAS REMOVED AND REPLACED. LEAK AND OPERATIONAL CHECKS WERE GOOD. (X)