### 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 atthe front oftheir microfiche folder.

. 1.Adefinition of afuel 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 aconsequence 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 atthe front ofthe Manual. The technical content of this document isapproved under the authority of OOA No. EASA.21J.068.
Signed

. Dale

. 

# 5-20-01 TR330-AMM-35 

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# SHOIRTS 

# 50 Maintenance QoG;JJfQl Manual ~~~ 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), orthe national regulatory authority office that is responsible forthe 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, orthe 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

FUELSYSTEM 28-00 8 Ventpipebonding TIS 12Years

Jumper leads VCK 12Years (Referto20-09-05 &20-09-12, pb201) 28-00 10 Ventpipebonding TIS 36M

Jumper leads VCK 36M (Referto20-09-05 &20-09-12, pb201) 28-10 5 Switch, Float TIS 12Years

(Referto20-09-05 &20-09-12, pb201) 28-40 7 Fuelprobes
-wiring

intemal totank VCK 12Years (Referto28A-42-03 (PreMod6738) or 288-42-03 (Post Mod6738) &20-09-12, pb201).

2. Exceptional Short-Term Extensions An exceptional short-term extension for aspecific 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' isdefined 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 oron 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 bythe Primary Certification Office (EASA) that short-tenn extensions uptothe following maximum values may be granted without consultation with that office. Requests forextensions in excess of these values must be submitted with fulljustification tothe Primary Certification Office (EASA) such that approval, ifgranted. can be given prior to their use. 

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# SHO~TS 50 Maintenance 

# CQJoQrcfl 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 interms of flight hours. B. Fuel System All's controlled by Calendar Time (M orYears) Where the repeat interval is 12 months Ofless, extensions up to 10% or 1 month (whichever isthe lesser) may exceptionally be granted on Fuel System 

### All intervals quoted in terms of months. Where the repeat interval isgreater than 12 months but less than 3years, extensions up to 2 months may exceptionally be granted. Where the repeat interval is3years or greater, extensions up to 3 months may exceptionally be granted. Itisthe operators responsibility to identify appropriate procedures with their local regulatory authority for the control and development oftheir maintenance program. This paragraph in the Fuel Airworthiness limitation document iswritten to confirm tothe 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 Page 3of3 Jun 

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