21 November-20 December 2019

179
Crack on stringer 10 of lower LH wing. (611954485)
AIRCRAFT ABOVE 5700kg
EMBRAER ERJ170100 – ATA 3213 MAIN LANDING GEAR STRUT/AXLE/TRUCK  – SUPPORT – INCORRECT ASSY. DR 611954449
After departing, Landing gear would not retract. Aircraft returned to base.

RH MLG inspected – found incorrect orientation of PN1840-0027 upper bearing support. Also inspected leg/stops/ torque links, found satisfactory.

Re-oriented upper bearing support, leg serviced and re-assembled. Retraction checks carried out satisfactory.

 
BOEING 737 319 – ATA 2760 DRAG CONTROL SYSTEM  – CABLE – CORRODED. DR 611954461
During lubrication of the exposed control cables in the main wheel well, #3 flight control spoiler cable WSA2-3 fount to be broken (where the cable passed through a pulley guide). Rectifications planned.
 
SAAB 340 B – ATA 2215 AUTOPILOT MAIN SERVO – SERVO MOTOR – UNSERVICEABLE. DR 611954483
On approach after autopilot disconnected, control column was stuck in centre position while attempting to roll aircraft to the right. Excessive force was required before it would respond.

Root cause: Ratchet noise heard coming from roll servo. Roll servo defective. Roll servo replaced.

EMBRAER EMB120 ER – ATA 5713 WING, LONGERON/STRINGER  – STRINGER – CRACKED. DR 611954485
During routine inspection, a crack of 6mm to the rivet head was observed on stringer 10 of lower LH wing at approx. station Y657 (I/B dry bay, FWD O/B corner of access panel).

Fatigue of LH Stringer 10 (Part number 120-16085-001 – pre-mod SB120-57-0037)
Embraer has been contacted and provided a temporary repair.

Permanent repair (SB 120-57-0037 incorporation) to be done within 4000 FC or next “C” Check (whichever occurs first).

 
AIRBUS A320 232 – ATA 5311 FUSELAGE MAIN, FRAME – HOLE – CRACKED. DR 611954491
During heavy maintenance inspection, as per SB 53-1372 R01, crack was found in 1 hole on RHS Fuselage, FR 35, S-30R. Crack still present after 2nd oversize.
Airbus contacted; approved repair embodied.
 
BOEING 787 8 – ATA 5720 WING, MISCELLANEOUS STRUCTURE – D rib Aux – CRACKED. DR 611954513
RHW flap support aux D backup rib found cracked.
EMBRAER EMB120 ER – ATA 2215 AUTOPILOT MAIN SERVO – SERVO – BINDING. DR 611954521
Flight controls stiff initially after disconnecting autopilot in flight. Once aircraft powered down and control lock tried to be put in binding occurred again.

Root cause: Aileron servo unserviceable.

Aileron servo replaced. System tests & duplicate inspection c/o satisfactory.

 
EMBRAER EMB120 ER – ATA 2750 TRAILING EDGE FLAP CONTROL SYSTEM  – FCU – FAULTY. DR 611954527
After take-off, flaps selected up, flap fault caution received. Land back to base planned and conducted.

After troubleshooting, Flap Control Unit PN 307500-1017replaced and tested serviceable.

 
AIRBUS A320 232 – ATA 3230 LANDING GEAR RETRACT/EXTENSION SYSTEM – HOSE – BURST. DR 611954529
Hyd – G rsvr low level ECAM (during climb).  ECAM actioned to turn Eng 1 hyd pump off.
R/H wheel well gear door actuator hose assy found leaking, (PN AE718529-2) hose assy replaced.
AIRBUS A320 232 – ATA 3441 INERTIAL GUIDANCE SYSTEM  – ADIRU – FAULTY. DR 611954531
Inflight, no PHC 3 DATA – source CFDS triggered within the PFR. ISIS CAS started to decrease from 265kt down to 0 within 1min. A/C reverted in Alternate law.

AP2 was voluntarily disengaged then re-engaged 1min14s later. AP2 was disengaged and AP1 was engaged. A/C landed uneventfully in direct law (A/C reverted in direct law as soon as L/G were selected down).

PFR data reviewed and Airbus contacted. After carrying out relevant AMM and TSM task and as per Airbus recommendation PHC3 and ADIRU3 replacement carried out.

 

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