# \. r 

# Temporary Revision 

# de Havilland Inc. - Temporary Revision
PSM NO. 1-83-7 AIRCRAFT

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# SERIES

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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

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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 Revis i on.



# RECORDING INSTRUCTIONS. Record th i s Temporary Revision No

. and the relevant i nformation in the appropr i ate 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 Revis i on 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 a i rcraft. A Modsum and/or Service Bulletin may be listed to ident i fy 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

RevisionTaskNumberApplicabilityFSL-01-FSL-02StandardFuelTankConfigurationwithServiceBulletin8-57-44orModsum80101514LongRangeFuelTankConfigurationwithServiceBulletin8-28-39orModsum80902090APUFuelTankBondingJumperswithServiceBulletin8-28-44orModsum80902140FSL-03-FSL-04AllPSM1-83-7TemporaryRevisionNo.AWL3-109(Cont'd)FUELSYSTEMLIMITATIONS(FSL)TaskDescriptionThistaskisnotapplicabletotheSeries300aircraft.DetailedInspectionoftheFuelTankBondingJumpers.ThistaskisnotapplicabletotheSeries300aircraft.DetailedInspectionoftheFuelTankWaterDrainValveDomedNut.SERIES300Interval-18,000flighthoursor108monthsNOTE2-18,000flighthoursor108monthsNOTE2TRAWL3-109Page3of8Aug31/2007rTask 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

F i ttings. 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 WiringHarness

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 Interval

18 , 000 flight hours or 108 months NOTE2 18,000 flight hours or 1 08 months NOTE2



### - 18,000 flight hours or 1 08 months NOTE2 18,000 flight hours or 1 08 months NOTE2 18,000 flight hours or 108 months NOTE2

6 , 000 flight hours or 36 months NOTE1 18,000 flight hours or 108 months NOTE2 18,000 flight hours or 1 08 months NOTE2 TR AWL3-109 Page 4 of 8 Aug 31/2007Task 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 Conf i guration 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 GaugingWiring Harness Outside of the Aluminum Support Conduit.

Discard the Fuel Tank Fuel Quantity Gauging Wire Harness

(without

Kynar sleeving) 

# SERIES 300 Interval 18,000 flight hours or 1 08 months NOTE2 18,000 flight hours or 108 months NOTE2 TRAWL3-109 Page 5 of 8 Aug 31/2007 ITask 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 Interval 72,000 flight hours or 36 years
TR AWL3-109 Page 6 of 8 Aug 31/2007Task 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 Revis i on No. AWL 3-109 (Cont ' d)



## FUEL SYSTEM LIMITATIONS (FSL)

Task DescriQtion Functional Check of the Fuel Tank Components and thePlumbing Lines Electrical Bonding

. 

# SERIES 300 Interval 18,000 flight hours or 108 months NOTE2 TRAWL3-109 Page 7 of 8 Aug 31/2007PSM 1-83-7 Temporary Revision No. AWL 3-109 (Cont'd)



## FUEL SYSTEM LIMITATIONS (FSL)

Task Number Applicabilit¥ Task Description Interval

FSL-18 Service Bulletin Functional Check of the Pressure Relief Valve Electrical Bond- 18,000 flight hours or 1 08 months

8-57-44

in g. NOTE2

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 months whichever

occurs first as tracked from the release date of this Temporary Revision AWL 3-109. The phase- in time of an AirworthinessDirective (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 flight hours or 36 months

whichever occurs first as tracked from the release date of this Temporary Revision AWL 3-109. The phase-in time of anAirworthiness Directive (AD) will take precedence over this phase-in time. 

# SERIES 300 TR AWL3-109 Page 8 of 8 Aug 31/2007