AD/TB20/35 - Fuel System
1AD/TB20/35 - Fuel System
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
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Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes
AD/TB20/35 Fuel System 12/99
Applicability: Model TB20 and TB21 aeroplanes serial numbers 1 to 822, 850 to 889 and 889 to 947 equipped with an engine monitoring cluster at amendment D and having a 14 volt electrical system.
Note 1: This Directive is not applicable to aeroplanes with a 24 volt electrical systems.
Note 2: The amendment D engine monitoring cluster is not a production fit and is only available as a spare. The amendment D cluster may be identified by markings on the engine monitoring cluster identification plate.
Requirement: 1. Install a placard adjacent to the fuel indicator, in accordance with Socata Service Bulletin SB 10-099-28 dated February 1999, stating:
If voltage is lower than 13 VOLTS (below green range), fuel quantity is over-estimated.
2. Incorporate the following amendments in the Flight Manual (Pilots Operating Handbook). This may be accomplished by inserting a copy of this Directive in the Flight Manual.
In SECTION 3 ‘EMERGENCY PROCEDURES’, immediately following the ‘ALTERNATOR FAILURE’ procedure insert:
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b. In SECTION 4 ‘NORMAL PROCEDURES’, in ‘PRE-FLIGHT INSPECTIONS’ of the ‘ELECTRICAL SYSTEMS’ procedure, at paragraph ‘a — Cabin’, insert immediately following the entry
‘Fuel gages check’:
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c. In SECTION 4 ‘NORMAL PROCEDURES’, in ‘AFTER STARTING ENGINE’ procedure, insert immediately before the entry
‘Fuel selector set to fullest tank’:
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Note 3: DGAC AD 1999-062(A) refers.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Compliance: 1. Before 31 December 1999.
- Before 31 December 1999.
This Airworthiness Directive becomes effective on 2 December 1999.
Background: This Directive is issued to ensure that pilots are aware that fuel contents may be over- estimated.