Federal Register of Legislation
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES
Beechcraft 1900 Series Aeroplanes
AD/BEECH 1900/14 Pilot's and Co-Pilot's Windshields 10/96
TX
Applicability: Model 1900D aeroplanes serial numbers UE-1 through UE-239 inclusive with either windshield part number (P/N) 114-384020-1 or 114-384020-2 fitted.
Requirement: 1. Identify whether windshield P/N 114-384020-1 or 114-384020-2 is fitted, noting that the pilot's windshield and co-pilot's windshield may not have the same windshield configuration.
2. Pull and band the circuit breakers leading to the windshield heat control on the pilot or co-pilot sides where windshield P/N 114-384020-1 or 114-384020-2 is fitted. The affected circuit breakers are the LEFT WSHLD, CONTROL and PWR circuit breakers located on the circuit breaker panel on the co-pilot's side (Zone 246) and the CO-PILOT WSHLD ANTI-ICE circuit breaker located on the aft side of the forward pressure bulkhead above the copilot left rudder pedal (Zone 222).
3. Fabricate a placard with the following words in letters at least 2.5 mm (0.10 inches) in height and install the placard within clear view of the pilot on the instrument panel:
FLIGHT IN KNOWN ICING CONDITIONS IS PROHIBITED
Note: FAA Priority Letter AD 96-15-01 Docket 96-CE-41-AD refers.
Compliance: For Requirement 1 - Before further flight after 21 July 1996.
For Requirement 2 and 3 - Immediately following Requirement 1, if either windshield P/N 114-384020-1 or 114-384020-2 is found to be fitted.
Background: The FAA has received reports of smoke and fire in the cockpit of two Beech Model 1900D aeroplanes. The reports indicate that a high resistance short circuit situation was created by the braid wire that is attached to the low heat power terminal block mounted on the pilot and co-pilot windshields. This caused arcing and generated sufficient amounts of heat, resulting in fire and smoke in the cockpit.
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