Commonwealth legislation

AD/PR/28 Amdt 1 - Hub Switches

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

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Requires a one‑time inspection of hub switches on specific Dowty Rotol propellers installed on Fokker F‑27 and Gulfstream 1 aircraft. Inspectors must check correct fitment, location and brush installation per Dowty Rotol Maintenance Manual 876 CM 61‑2‑4 p.302/2 and use switch P/N 601023026 in positions 1 and 3 and P/N 601023027 in position 2 (Requirement; Notes).

Aircraft operators pay for the inspection and any corrective work; an approved maintenance organisation or qualified person decides and carries out the inspection. Compliance is due at next maintenance release or by 30 October 1989 (Compliance).

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AD/PR/28 Amdt 1 - Hub Switches

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Propellers - Variable Pitch - Dowty Rotol

AD/PR/28

Amdt 1

Hub Switches 10/89

Applicability: Any Dowty Rotol Propeller P/N R193/4-30-4/xxx with the following S/N installed on Fokker F-27 aircraft.

DRG 225/63, - 265/64, - 23/68, - 121/70, - 59/76, - 21/77, - 65/77, - 76/77, - 8/78, - 44/78, - 120/78, - 121/78, - 15/79, - 417/80 - 1127/80 - 3954/86.

Dowty Rotol Propeller P/N R184/x-xx-x/xxx S/No DRG 118/65 installed on Gulfstream 1 G 159 aircraft.

Requirement: Inspect hub switches for correct fitment, location and correct brush installation within the hub switch block. Refer Dowty Rotol Maintenance Manual 876 CM 61-2-4 Page 302/2.

Note 1: Use switch P/N 601023026 in position 1 and 3 and switch P/N 601023027 in

position 2.

Note 2: Netherlands AD 89-19 issue 2 refers.

Compliance: Unless already accomplished at next inspection for issue of a Maintenance release or by 30 October 1989 whichever occurs first.

Background: Due to the possibility that the hub switches may have been incorrectly installed a one time inspection is required. Amendment 1 corrects a serial no. change.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/PR/28 Amdt 1 - Hub Switches