COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Radio Communication and Navigation Equipment
AD/RAD/64 Skywatch SKY497 4/99 DM
Applicability: BFGoodrich Avionics Systems Inc Skywatch SKY497 traffic advisory system installations with a top-mounted antenna.
Note: These installations are known to be fitted to, but not limited to, the following aircraft models.
Manufacturer Aircraft Model and/or Series
Raytheon Beech 90, 100, 200 and 300 Series
Cessna 172, 182, 206, 208, 210, 300, 400 and 500 Series
Piper PA-23, PA-31-360, PA-31T, PA-32, PA-34, PA-42 and PA-46
Hawker HS-700 and HS-800
Mitsubishi MU-2 Series
Dassault F10
Mooney M20 Series
Bombardier de Havilland DHC-6 Series Westwind 1124
Bell 407
Eurocopter SA365
Socata TBM700
Requirement: 1. Add the information contained in one of the following documents to the LIMITATIONS section of the Flight Manual:
- FAA AD 98-25-02 Amdt 39-10924 Appendix titled “Power-Up Procedures for Skywatch SKY497 Installations with Top-Mounted Antenna”.
b. BFGoodrich Alert Service Bulletin SB #78A dated 21 October 1998.
This task may be accomplished by inserting a copy of either document into the limitations section of the Flight Manual.
Note: The limitations added to the Flight Manual require the pilot to verify the antenna configuration of the SKY497 each time the system is powered up.
2. If an incorrect antenna configuration is found during any of the power-up procedures specified in the Flight Manual limitations required by this Directive, remove the SKY497 from service.
Note: FAA AD 98-25-02 Amdt 39-10924 refers.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Compliance: 1. Within 25 hours time in service from the effective date of this Directive.
2. Prior to further flight.
This Airworthiness Directive becomes effective on 24 February 1999.
Background: The FAA has been advised of numerous reports of internal component failure of SKY497 installations which changes the antenna configuration from a top to a bottom mount. The change in configuration would result in target indications appearing on the incorrect side of the aeroplane (ie the actual target at the 9 o’clock position relative to the aircraft shows on the SKY497 installation in the 3 o’clock position).
This directive requires that the antenna configuration be verified each time the system is powered up.