Mon, May 16, 2005
British Aerospace BAe 125 Series Aeroplanes, AD/HS 125/175
Emergency Radio Wiring 7/2005 DM
Applicability:
Hawker 800XP aeroplanes serial numbers 258541, 258556 and 258567
through 258608 inclusive.
Requirement: 1. Perform a detailed inspection
for damage (primarily but not limited to evidence of heat damage)
of wiring in the flight compartment in accordance with Part 1 of
the Accomplishment Instructions of Raytheon Service Bulletin (SB)
24-3555, Revision 1 dated June 2004.
Note 1: For the purposes of this Directive, a detailed inspection
is: “An intensive examination of a specific item,
installation or assembly to detect damage, failure or irregularity.
A direct source of good lighting as well as inspection aids such as
mirrors, magnifying lenses, etc., may be necessary. Surfaces may
also be required to be cleaned.”
2. If damage is found in the wiring, repair in accordance with Part
1 of the Accomplishment Instructions of SB 24-3555 Rev 1.
3. Modify Emergency Radio Circuit as detailed in the Part 2 of the
Accomplishment Instructions of SB 24-3555 Rev 1.
4. Conduct functionality check of the emergency radio system.
5. Revise Aircraft Fight Manual Emergency Procedure section by
inserting Temporary Change P/N 140-590032-0005TC7.
Note 2: FAA AD 2005-09-03 Amdt 39-14071 refers.
Compliance:
For Requirement 1 - Within 50 hours time in service (TIS) or 30
days, whichever occurs first, after the effective date of this
Directive.
For Requirement 2 - Before further flight after Requirement 1
inspection.
For Requirement 3:
a. If damage was found during the Requirement 1 inspection - Before
further flight after the inspection.
b. If damage was not found during the Requirement 1 inspection -
Within 300 hours TIS or 180 calendar days after the effective date
of this Directive.
For Requirement 4 - Before further flight after the Requirement 3
modification is accomplished.
For Requirement 5 - Before further flight after the Requirement 3
modification is accomplished.
This Airworthiness Directive becomes effective on 1 June 2005.
Background: The United States Federal Aviation
Administration (FAA) has advised of possible miswiring in the power
distribution system, which could cause damage due to excessive
current flow in the electrical circuit that could result in smoke
or fire in the aircraft.
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