Maintenance

Manual

TEMPORARY REVISION

FILING INSTRUCTIONS:

REASON FOR ISSUE:

TEMPORARY REVISION TR330-AMM-35

Insert this TR before Chapter 5-20-01, page 1.

Microfiche holders of the 503-30 Aircraft Maintenance Manual

should insert this Temporary Revision at the front of their microfiche

folder. .

1. A definition of a fuel tank system All is incorporated.

2. Additional maintenance tasks have been identified as

airworthiness limitation items associated with the fuel tank

system installation when assessed against the EASNFAA

harmonised criteria.

3_ Provision for exceptional short term extension of an All not

exceed time is incorporated.

4. All other information is introduced as a consequence of

completing the system safety review required by

EASA INT/POU25/12 (and hence SFAR 88).

NOTE: Record the incorporation of this Temporary Revision on the yellow RECORD OF

TEMPORARY REVISIONS sheet at the front of the Manual.

The technical content of this document is approved under the authority of OOA No. EASA.21J.068.

Signed .

Dale .

5-20-01 TR330-AMM-35

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TEMPORARY REVISION

FUEL SYSTEM AIRWORTHINESS LIMITATION ITEMS - CHECKS

1_ General

These All's identify inspection tasks related to fuel tank ignition source prevention, which must

be done to maintain the design level of safety for the operational life of the airplane. These .A~l's

are mandatory and cannot be changed or deleted without the approval of the European AViation

Safety Agency (EASA), or the national regulatory authority office that is responsible for the SD3

Type Certificate.

Strict adherence to methods, techniques and practices as referred in the All's is required to

ensure the All is complied with. Any use of methods, techniques or practices not contained in

these All's must be approved by EASA, or the national regulatory authority office that is

responsible for the SD3 Type Certificate.

MAINT. PROG. SUB

CHAPTER SECT. ITEM DESCRIPTION TASK

CURRENT NOT

EXCEED TIME

5-25

28

PROGRAMME DESCRIPTION COMPONENTfSYSTEM/ENGINE

FUEL SYSTEM

28-00 8 Vent pipe bonding TIS 12 Years

Jumper leads VCK 12 Years

(Refer to 20-09-05 & 20-09-12, pb201)

28-00 10 Vent pipe bonding TIS 36M

Jumper leads VCK 36M

(Refer to 20-09-05 & 20-09-12, pb201)

28-10 5 Switch, Float TIS 12 Years

(Refer to 20-09-05 & 20-09-12, pb201)

28-40 7 Fuel probes - wiring

intemal to tank VCK 12 Years

(Refer to 28A-42-03 (Pre Mod 6738) or

288-42-03 (Post Mod 6738) & 20-09-12,

pb201).

2. Exceptional Short-Term Extensions

An exceptional short-term extension for a specific Fuel System All interval may be made on one

aircraft for a limited period of time without jeopardising safety.

The term 'exceptional short-term extension' is defined as an increase in a Fuel System All

interval that may be needed to cover an uncontrollable or unexpected situation. Repeated use of

such extensions, either on the same aircraft or on similar aircraft in the operators fleet, should not

be used as a substitute for good management practices.

Unless noted adjacent to the task, for all Fuel System All's identified above, it has been

accepted by the Primary Certification Office (EASA) that short-tenn extensions up to the following

maximum values may be granted without consultation with that office. Requests for extensions in

excess of these values must be submitted with full justification to the Primary Certification Office

(EASA) such that approval, if granted. can be given prior to their use.

5-20-01 TR330-AMM-35

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Manual ~ ~LL:'J

TEMPORARY REVISION

A. Fuel System All's controlled by Flight Hours (FH)

Extensions up to 10% or 500 FH (whichever is lesser) may exceptionally be granted on Fuel

System All intervals quoted in terms of flight hours.

B. Fuel System All's controlled by Calendar Time (M or Years)

Where the repeat interval is 12 months Of less, extensions up to 10% or 1 month (whichever

is the lesser) may exceptionally be granted on Fuel System All intervals quoted in terms of

months.

Where the repeat interval is greater than 12 months but less than 3 years, extensions up to 2

months may exceptionally be granted.

Where the repeat interval is 3 years or greater, extensions up to 3 months may exceptionally

be granted.

It is the operators responsibility to identify appropriate procedures with their local regulatory

authority for the control and development of their maintenance program.

This paragraph in the Fuel Airworthiness limitation document is written to confirm to the local

regulatory authority that exceptional short-term extensions of Fuel System All intervals are

permissible. Approval of such extensions rests with the local authority in the same way as it

does for any other scheduled maintenance task interval extension.

5-20-01 TR330-AMM-35

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Jun 06/06