A350 In-Service SummarySichuan Airlines

● Sichuan airlines Introduction

● Operational Reliability

● Delay Rates Caused by Mechanical Failure

● AOG/ Severe Events

● Repetative Failure

● Cabin-related Failure

● About A350

● Content

● Sichuan airlines Introduction

● Sichuan airlines Introduction

Sichuan Airlines Fleet

A350-900

A330-200F

A330-300

A330-200

A321NEO

A321CEO

A320NEO

A320CEO

A319CEO

0 15 30 45 60

23

53

5

43

12

6

7

2

4

● Routes of Sichuan airlines

We now have four A350-900 aircrafts in operation, and an other total number of 10 are expected to join our fleet starting at 2021.

Tail Number MSN Introducing Time FH FC

B-301D 060 2018.08.09 4615 1528

B-304U 052 2018.11.26 3569 941

B-304V 055 2018.12.19 3288 1091

B-306N 281 2019.05.22 1284 450

● A350 Fleet Overview

● Routes of Our A350

Operational Reliability

99,30 %

99,48 %

99,65 %

99,83 %

100,00 %

2018.11 2018.12 2019.01 2019.02 2019.03 2019.04 2019.05 2019.06 2019.07 2019.08

100 % 100 %

100 %

100 %

100 %100 % 100 %

100 %

99 %

100 %

Op

erat

ion

al R

elia

bil

ity%

2018 2019

99,70 %

99,52 %

OR

● Operational Reliability

Daily Utilization Rate

2018.11 2018.12 2019.01 2019.02 2019.03 2019.04 2019.05 2019.06 2019.07 2019.08

11,9612,24

10,459,80

11,1411,53

11,16

10,21

7,207,82

Ho

2,00

4,50

7,00

9,50

12,00

2018 2019

11,10

7,85

● Daily Utilization Rate

0,00 %

0,75 %

1,50 %

2,25 %

3,00 %

2018.11 2018.12 2019.01 2019.02 2019.03 2019.04 2019.05 2019.06 2019.07 2019.08 2019.09 Avg

Rates

● Delay Rates Caused by Mechanical Failure

Failure Description Solutions

AIR HOT AIR 1 LEAK A loose up-stream pipe was found in 131HK and it was installed again.

F/CTL FLAP ADGB Trouble-shooting found the inner flap was inoperative, MCE of the right-wing was replaced.

Green Hydraulic System Overheat Replaced EDP of ENG 2.

F/CTL RUDDER ELEC ACTUATOR Replaced the electric module of rudder(403CY).

IPTCC Fault Adjusted the cable and replaced IPTCC.

BRAKES ALTN BRK 05&06 RELEASED

4GG3(MANIFOLD ASSY-BRK SERVOVALVE)、9GY3(SERVOVALVE-ALTN BRK)、RBCU1&2 were replaced.

● Severe Events

Failure Description Solutions

Right wing tank’s fuel goes into center tank

5604QA2、5605QA2(VALVE-CENTRE TANK,NON RETURN)、5601QA2、

5602QA2(PUMP-JET,FUEL SCAVENGE )、5302QA2、5302QA1(VALVE-AIR

RELEASE )、5600QA2(VALVE-SCAVENGE,FUEL)，were replaced and sent for

repair.

PMA electrical plug Leaks Replaced PMA stator.

F/CTL FLAP PCU 2 PCU was replaced.

TRAS Gimbal pin retainer clip slide out of position

Replace the clip by new PN：351-3021-1.

● Severe Events

● Severe Events

PMA electrical plug

oil leakage has been observed from the PMA electrical connectors on other Trent series engines utilising the same design,therefore a similar potential for oil

● Severe Events

TRAS Gimbal pin retainer clip

Failure Description Solutions

ENG 1 SHORT TERM MINOR FAULT PROBE-T20, ENG1(4020KS1) / HARNESS-EEC TO PYLON 1A,ENG1(4305KS1) / HARNESS-EEC TO PYLON 1B,ENG1(4306KS1)

The failure temporarily did not show itself again after T20 sensor was replaced.

OIS CAB & MAINT REDUNDANCYCheck the OSFC module Conditions. ENRM and IPSM recommend reset and not replaced. Other modules are recommended to be replaced directly to avoid OSFC failure when two modules become inoperative.

PROBE 4-N1 TURBINE SPEED,ENG2(4088KS42) / HARNESS-LPT OVERSPEED,ENG2(4360KS2) / HARNESS-EEC TO CORE ZONE 3 CHANNEL B,ENG2(4330KS2)

Ask maintenance personnel to pay attention to “fault with no effects”, Replace the corresponding LPT.

A-ICE ENG 2 VLV FAILED CLOSED Replace the corresponding PRSOV and PRV.

● Repetitive Events

Cabin-related Failure

SVDU Failure

Toilet Equipment Failure

Galley Equipment Failure

Lights Failure

Unserviceable IFE

Unjustable First-class Seats

0 6 11 17 22

4

4

5

6

18

21

● Cabin-related Failure

● About A350

● A350 Technical Documents

● Easy Maintenance

● Trouble Shooting

● Poor stability system

● Technical ability improvement

Thank you！