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ISSUE: JUL 23/14

 

A330 

ALS Part 4 

Ageing Systems Maintenance 

(ASM) 

- 

Variation 4.1 
AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUL 23/14 ALS PART 4 VARIATION 4.1 PAGE: 1/4

6_v1 

© AIRBUS SAS 2014. All rights reserved. Confidential and proprietary document. 

The ALS Part 4 is approved and Variations must also be approved. 

The present Variation is approved by European Aviation Safety Agency (EASA). 

APPROVAL REFERENCES 

A330 ALS Part 4: 

REVISION NUMBER APPROVAL 

REFERENCE APPROVAL DATE

04 10046192 AUG 27/13 

VARIATION: 

This Variation is covered by the Certification Document 00G050A134A/C01: 

VARIATION 

NUMBER 

ISSUE 

NUMBER AFFECTED SECTIONS APPROVAL REFERENCE APPROVAL DATE

4.1 01 4-2-1 

4-3-1 10049982 JUL 23/14 

REASON 

This Variation aims to provide the impact on the mandatory instructions and airworthiness 

limitations published in the A330 ALS Part 4 Revision 04, as a result of the introduction of THSA 

new PNR 47147-710 by embodiment of MOD 203659. 

APPLICABILITY 

This Variation applies to the following aircraft series and models: 

AIRCRAFT SERIES AIRCRAFT MODELS WV 

A330-300 

A330-301 WV000 series, WV010 series, WV050 series 

A330-302 WV050 series 

A330-303 WV050 series 

A330-321 WV000 series, WV010 series 

A330-322 WV000 series, WV010 series 

A330-323 WV020 series, WV050 series 
AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUL 23/14 ALS PART 4 VARIATION 4.1 PAGE: 2/4

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© AIRBUS SAS 2014. All rights reserved. Confidential and proprietary document. 

AIRCRAFT SERIES AIRCRAFT MODELS WV 

A330-300 

A330-341 WV000 series, WV010 series 

A330-342 WV000 series, WV010, series, WV020 series, 

WV050 series 

A330-343 WV020 series, WV050 series 

COMPLIANCE 

Airworthiness limitation provided in this Variation shall be introduced into the Operator’s 

maintenance program at the time of MOD 203659 embodiment. 

VALIDITY 

Airworthiness limitations stated in this Variation may be negated when airworthiness limitation 

changes are published in (a) Variation(s) or a Revision subsequent to the approval date of this 

Variation. 

In such case, the validity of this Variation is suspended. 

All other airworthiness limitations given in the A330 ALS Part 4 Revision 04 and other current 

Variations remain applicable. 

Airworthiness limitations stated in this Variation will be published in the next scheduled 

Revision. 
AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUL 23/14 ALS PART 4 VARIATION 4.1 

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© AIRBUS SAS 2014. All rights reserved. Confidential and proprietary document. 

DESCRIPTION The EASA approves the introduction of the following part number: ALS Sub-part 4-2-1 SYSTEMS LIFE-LIMITED COMPONENTS/LIFE LIMITS 

Note: Explanations on the applicability system are provided in the A330 ALS sub-part 4-0 paragraph 3. 

 Explanation notes are located under the 

assy title. 

LIFE LIMITS 

(Whichever occurs first) 

LIFE LIMITS APPLICABILIT

A330-2xxF A330-2xx A330-30x 

 Nomenclature Part Number FH FC Cal. WV00x WV02x WV05x WV06x WV00x WV01x WV05x  ATA 27-44-00 FLIGHT CONTROL – TRIMMABLE HORIZONTAL STABILIZER (THS) HYDRAULIC ACTUATION (FIG. 05) 

(1) Life limitation to be applied from initial entry into service for THSA originally manufactured as PNR 47147-400 (MOD 45906) and re

SB A330-27-3093 (MOD 49591) and subsequently retrofitted into PNR 47147-700 by SB A330-27-3143 (MOD 54881) and finally by SB A330-27-3198 (MOD 203659). Life limitation to be applied from the time of retrofit into PNR 47147-400 (SB A330-27-3052) for THSA subsequently retrofitt49591/SB A330-27-3093) then retrofitted into PNR 47147-700 by SB A330-27-3143 (MOD 54881) and finally retrofitted into PNR 4(MOD 203659). The sum of the accumulated lives PRE and POST SB A330-27-3052 plus PRE and POST SB A330-27-3143 plu3198 must not exceed 60000 FH/40000 FC, whichever occurs first.

 THS Actuator 47147-710 36000 24000 N/A X (1) X (1) 
AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUL 23/14 ALS PART 4 VARIATION 4.1 

3027 

© AIRBUS SAS 2014. All rights reserved. Confidential and proprietary document. 

ALS Sub-part 4-3-1 SYSTEMS INSTALLATION MAINTENANCE REQUIREMENTS/CONTROLLED AT ASSEMBLY LEVEL 

Note: Explanations on the applicability system are provided in the A330 ALS sub-part 4-0 paragraph 4.

ALS PART 4 MAINTENANCE TASKS LIMITATIONS (Whichever occurs first) REFERENCE L

Task Number Zone Description Threshold Interval 

 274400-00001-4-E 311 

312 

THSA – FIG. 05

Detailed inspection of the ball screw assembly for integrity of the primary and secondary load path and check the Checkable Shear Pins (CSP). 

This task must be carried out before task 274400-00002-1-E. Note: No short-term extension is allowed. 

700 FH 

Note 

700 FH 

Note 

SB A330-27-3102 R08

AMM 27-44-51 

 274400-00002-1-E 311 

312 

THSA – FIG. 05

Lubrication of the THSA ball-nut. 

Note 1: No short-term extension is allowed. Note 2: This task must be carried out at the 

opportunity of ASM task 274400-00001-4-E once applicable. 

1000 FH 

Note 1 

1000 FH 

Note 1 

AMM 12-22-27/301 

274400-00003-1-E 311 

312 

THSA – FIG. 05

Remove complete THSA for No-Back Brake (NBB) carbon disks discard and replace with serviceable THSA unit. 

Note: The threshold of 12000 FC is the time 

since retrofit into PNR 47147-710. 

12000 FC 

Note 

12000 FC AMM 274451-000-801 

AMM 274451-400-801 

VSB 47147-27-21