COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Beechcraft 35 (Bonanza) Series Aeroplanes
AD/BEECH 35/42 Internally Lighted Altimeter 10/73
Applicability: All models V35B with internally lighted altimeters supplied as spares ex-Beech Wichita between 1 September 1972 and 1 August 1973 and model V35B with S/Nos. D9398 to D9520.
Requirement: 1. Prior to next flight visually inspect the internally lighted altimeters. If the locking stud screw is located above and to the left of the barometric scale adjustment knob, no further inspection or replacement is necessary.
2. If the locking stud screw is located below, and to the right of the barometric adjustment knob, replace the instrument within 50 hours time in service after
17 October 1973. Until replacement is accomplished check the altimeter prior to each flight as follows:
Rotate barometric scale adjustment knob while applying outward finger pressure to ensure the elevation hands do not disengage from the barometric scale.
Disengagement will be readily recognised by the knob snapping outward and the elevation hands will not move when the barometric scale is rotated. If disengagement occurs, replace the altimeter with a 58-380045-3 millibars scale 35,000 feet altimeter, or an equivalent. All future altimeters will have locking stud screws above and to the left of the adjusting knob as in 1. above.
Note: Until replacement altimeters are installed forward pressure should be exerted on the knob whenever changing barometric settings.
Compliance: As detailed in the Requirement document.
Overview
The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA) under the authority of the Australian Parliament, serve to ensure the safety of civil aviation within Australia. One particular legislative instrument, F2006B03840, addresses a specific safety issue identified with the Beechcraft 35 (Bonanza) series aeroplanes. This instrument was enacted to mitigate risks associated with internally lighted altimeters installed in certain models of the aircraft. The policy objective is to ensure that such altimeters function correctly to prevent potential mid-air incidents that could arise from incorrect altitude readings. This instrument mandates inspections and, where necessary, replacement of the altimeters to maintain safety standards and compliance with regulatory requirements.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to all models V35B of the Beechcraft 35 (Bonanza) series aeroplanes equipped with internally lighted altimeters. These models include those supplied as spares ex-Beech Wichita between 1 September 1972 and 1 August 1973 and those with serial numbers D9398 to D9520. The regulation sets forth requirements for the inspection and replacement of these altimeters to ensure compliance with airworthiness directives. The directive mandates a visual inspection of the altimeters prior to each flight, with specific actions contingent upon the position of the locking stud screw relative to the barometric scale adjustment knob. If the screw is above and to the left of the knob, no further action is necessary; however, if it is below and to the right, the instrument must be replaced within 50 hours after 17 October 1973. Until replacement, certain checks must be performed prior to each flight to ensure the altimeter remains functional. Compliance with these regulations is critical for maintaining the safety and airworthiness of the affected aircraft.
Key Provisions
The Civil Aviation Regulations 1998, specifically in Part 39 - 105, mandates certain actions for Beechcraft 35 (Bonanza) Series Aeroplanes with specific model numbers and production dates. The regulation applies to all models V35B with internally lighted altimeters supplied as spares from Beech Wichita between 1 September 1972 and 1 August 1973, and model V35B with serial numbers ranging from D9398 to D9520. The regulation, identified as AD/BEECH 35/42, requires an inspection of the internally lighted altimeters prior to each flight. If the locking stud screw is found above and to the left of the barometric scale adjustment knob, no further action is necessary. However, if the screw is located below and to the right of the adjustment knob, the altimeter must be replaced within 50 hours of service after 17 October 1973. Until replacement, the altimeter must be checked before each flight by rotating the barometric scale adjustment knob while applying outward finger pressure to ensure that the elevation hands do not disengage from the barometric scale.
The obligations imposed by these regulations on the relevant parties include regular inspection of the altimeters as specified, and replacement if necessary, to maintain the airworthiness of the aircraft. Pilots and maintenance personnel must adhere to the inspection and replacement procedures outlined to ensure safety compliance. The regulations require meticulous attention to the positioning of the locking stud screw relative to the barometric scale adjustment knob and mandate specific actions if the screw is not in the correct position.
Failure to comply with the requirements set out in the regulation can result in serious safety implications, potentially leading to aircraft accidents or incidents. The specific consequences of non-compliance are not detailed in the provided text, but generally, non-compliance with airworthiness directives can lead to severe penalties. This may include fines, legal action, and potential grounding of the aircraft until compliance is achieved. The exact penalties and consequences would be determined by the Civil Aviation Safety Authority (CASA) in accordance with the broader regulatory framework governing aviation safety in Australia.