\. r 

Temporary 

Revision de Havilland Inc. - Temporary Revision 

PSM NO. 1-83-7 AIRCRAFT ____ -=D~A:.:::S.:....:H....:::8~--- SERIES ___ ..::.30;:.;:0;........._ 

PUBLICATION AIRWORTHINESS LIMITATIONS LIST TEMPORARY REVISION NO. AWL 3-109 

REF#: 83AWL 031 R.AWL5FSL 

The contents of this Temporary Revision have been approved by the Chief, Engineering, Aircraft 

:::~~:~;~:;c;~;epartmem m Transport. s;gned ..... ~ ............ . 

AWL-S- Fuel System Limitations 

FILING INSTRUCTIONS: 

This Temporary Revision supercedes TRAWL 3-108. Remove the TRAWL 3-108 from the PART 2 Airworthiness Limitations, AWL 5 - Fuel System Limitations Section and insert this new Temporary Revision. 

REASON FOR ISSUE: 

Revises the Part 2 Airworthiness Limitations, AWL 5 - Fuel System Limitations Section NOTE1 and NOTE2. 

ACTION: 

Use the Fuel System Limitations as given in this Temporary Revision. 

RECORDING INSTRUCTIONS. 

Record this Temporary Revision No. and the relevant information in the appropriate columns of the TEMPORARY REVISIONS INDEX at the front of PART 2, PSM 1-83-7. 

SERIES 300 

TRAWL 3- 109 

Page 1 of 8 

Aug 31 /2007 

Temporary 

Revision 
Temporary 

Revision 

PSM 1-83-7 Temporary Revision No. AWL 3-109 (Cont'd) 

5. FUEL SYSTEM LIMITATIONS 

5.1 INTRODUCTION 

This section lists the Fuel System Limitations (FSL) that are mandated by the Special Federal Aviation Regulation (SFAR) 88. 

FSLs are limitation requirements that identify all the necessary maintenance and inspection instructions to maintain the design features required to preclude the existence or development of an ignition source within the fuel tank system throughout the operational life of the aircraft. 

5.2 RULES APPLICABLE TO FUEL SYSTEM LIMITATIONS 

A. No person may operate an aircraft unless instructions for maintenance and inspection of the 

fuel tank system are incorporated into the operator's maintenance program. 

B. Task intervals are provided in both flight hours and calendar intervals. Tasks are to be 

performed at whichever interval occurs first. 

5.3 PAGE FORMAT DESCRIPTION 

The Fuel System Limitations (FSL) are presented in the following format: 

FUEL SYSTEM LIMITATIONS (FSL) 

Task Number Agglicabilit~ Task Descrigtion Interval 

A B c D 

A. Task Number: Task reference number. 

B. Agglicabilit~: "All" is for all aircraft. A Modsum and/or Service Bulletin may be listed 

to identify the FSL as it applies to the aircraft configuration. 

C. Task Descrigtion: 

D. Interval: 

Brief description of the task to be done. 

Calculated limiting interval. 

SERIES 300 

TRAWL 3-109 

Page 2 of 8 

Aug 31 /2007 

i ~ 

Temporary 

Revision 
Task Number Applicability 

FSL-01 -

FSL-02 Standard Fuel Tank 

Configuration 

with 

Service Bulletin 

8-57-44 

or 

Modsum 80101514 

Long Range Fuel Tank 

Configuration 

with 

Service Bulletin 

8-28-39 

or 

Modsum 80902090 

APU Fuel Tank Bonding 

Jumpers 

with 

Service Bulletin 

8-28-44 

or 

Modsum 80902140 

FSL-03 -FSL-04 All 

PSM 1-83-7 Temporary Revision No. AWL 3-109 (Cont'd) 

FUEL SYSTEM LIMITATIONS (FSL) 

Task Description 

This task is not applicable to the Series 300 aircraft. 

Detailed Inspection of the Fuel Tank Bonding Jumpers. 

This task is not applicable to the Series 300 aircraft. 

Detailed Inspection of the Fuel Tank Water Drain Valve Domed 

Nut. 

SERIES 300 

I

18,000 flight h

N

18,000 flight h

N
Task Number Agglicabili:t¥ 

FSL-05 All 

FSL-06 Standard Fuel Tank 

Configuration 

FSL-07 -

FSL- 08 All 

FSL-09 All 

FSL- 10 All 

FSL-11 All 

FSL-12 All 

FSL-13 All 

PSM 1-83-7 Temporary Revision No. AWL 3-109 (Cont'd) 

FUEL SYSTEM LIMITATIONS (FSL) 

Task Descrigtion 

Functional Check of the Fuel Tank Water Drain Valve Electrical 

Bonding. 

Detailed Inspection of the Fuel Tank Scavenge and Vent Line 

Wiggins Fittings. 

This task is not applicable to the Series 300 aircraft. 

Functional Check of the Magnetic Dipstick Electrical Bonding. 

Functional Check of the Auxiliary Fuel Boost Pump Electrical 

Bonding. 

Detailed Inspection of the Fuel Tank Ladder Plate to Access 

Panel Interface and the Ladder Plate Seals. 

Detailed Inspection of the Fuel Quantity Gauging Wiring Harness Metal Overall Shield. 

Functional Check of the Fuel Quantity Gauging Wiring Harness 

Metal Overall Shield Electrical Bonding. 

Functional Check of the Fuel Quantity Gauging Wiring Harness 

Aluminum Support Conduit Electrical Isolation. 

SERIES 300 

In

18,000 flight h

N

18,000 flight h

N

18,000 flight h

N

18,000 flight h

N

18,000 flight h

N

6,000 flight h

N

18,000 flight h

N

18,000 flight h

N
Task Number Agglicabili~ FSL-14 Standard Fuel Tank 

Configuration 

with 

Service Bulletin 

8-28-37 

or 

Modsum 8Q1 01527 

Long Range Fuel Tank 

Configuration 

with 

Service Bulletin 

8-28-40 

or 

Modsum 8Q902123 

FSL-15 Standard Fuel Tank 

Configuration 

with 

Pre Service Bulletin 

8-28-37 

or 

Pre Modsum 8Q1 01527 

Long Range Fuel Tank 

Configuration 

with 

Pre Service Bulletin 

8-28- 40 

or 

Pre Modsum 8Q902123 

PSM 1-83-7 Temporary Revision No. AWL 3-109 (Cont'd) 

FUEL SYSTEM LIMITATIONS (FSL) 

Task Descrigtion 

Detailed Inspection of the Fuel Tank Fuel Quantity Gauging Wiring Harness Outside of the Aluminum Support Conduit. 

Discard the Fuel Tank Fuel Quantity Gauging Wire Harness 

(without Kynar sleeving) 

SERIES 300 

I

18,000 flight h

N

18,000 flight h

N
Task Number Agglicability 

FSL-16 Standard Fuel Tank 

Configuration 

with 

Service Bulletin 

8-28-37 

or 

Mod sum 80101527 

Long Range Fuel Tank 

Configuration 

with 

Service Bulletin 

8-28-40 

or 

Modsum 80902123 

PSM 1-83-7 Temporary Revision No. AWL 3-109 (Cont'd) 

FUEL SYSTEM LIMITATIONS (FSL) 

Task Descrigtion 

Discard the Fuel Tank Fuel Quantity Gauging Wire Harness (with Kynar sleeving) 

SERIES 300 

In

72,000 flight 
Task Number A~:mlicability FSL-17 Standard Fuel Tank 

Configuration 

with 

Service Bulletin 

8-57-44 

or 

Modsum 80101514 

Long Range Fuel Tank 

Configuration 

with 

Service Bulletin 

8-28-39 

or 

Modsum 80902090 

APU Installation 

with 

Service Bulletin 

8-28- 44 

or 

Modsum 80902140 

PSM 1-83-7 Temporary Revision No. AWL 3-109 (Cont'd) 

FUEL SYSTEM LIMITATIONS (FSL) 

Task DescriQtion 

Functional Check of the Fuel Tank Components and the Plumbing Lines Electrical Bonding. 

SERIES 300 

I

18,000 flight h

N
PSM 1-83-7 Temporary Revision No. AWL 3-109 (Cont'd) 

FUEL SYSTEM LIMITATIONS (FSL) 

Task Number Applicabilit¥ Task Description In

FSL-18 Service Bulletin Functional Check of the Pressure Relief Valve Electrical Bond- 18,000 flight h

8-57-44 in g. N

or 

Modsum 8Q1 01514 

NOTE1: For aircraft that have exceeded the task interval, this task to be incorporated within 2,000 flight hours or 12 

occurs first as tracked from the release date of this Temporary Revision AWL 3-109. The phase-in time of an A

tive (AD) will take precedence over this phase-in time. 

NOTE2: For aircraft that have exceeded 12,000 flight hours or 72 months, this task to be incorporated within 6,000 fligh

whichever occurs first as tracked from the release date of this Temporary Revision AWL 3-109. The phase-

thiness Directive (AD) will take precedence over this phase-in time. 

SERIES 300