Commonwealth legislation

AD/SWSA226/82 - Elevator Control Rod End Bearing

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

What this is: A mandatory safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority for specific Fairchild aircraft.

Who it affects: Owners and operators of Fairchild (Swearingen) SA26, SA226, and SA227 series aeroplanes, including specific serial numbers (CC/DC784 and CC/DC790 through CC/DC884).

What it requires:

Inspection: Check the elevator control rod end bearing seals for creasing (wrinkles or folds) using specific Fairchild service instructions. If creasing is found, replace the entire assembly.
Hardware upgrade: Install a new washer and replace a specific bolt with a longer one at the "walking beam" connection point.

Why it matters: Creased bearings can fall apart, disconnecting the elevator control system and causing the pilot to lose pitch control (the ability to make the plane climb or descend), potentially leading to a crash.

Deadline: Aircraft must comply before accumulating 75 hours of flight time after 1 January 1998.

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AD/SWSA226/82 - Elevator Control Rod End Bearing

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes

AD/SWSA226/82 Elevator Control Rod End Bearing 1/98

Applicability Fairchild aircraft models SA26, SA226, SA227-AC, SA227-AT, SA227-BC, SA227-TT and SA227-CC/DC (Serial numbers CC/DC784 and CC/DC790 through CC/DC884).

Requirement 1. Inspect the elevator control rod end bearing retainer/dust seals for evidence of creasing in accordance with Fairchild Service Bulletin (SB) 26-27-30-046,

226-27-060, 227-27-041 or CC7-27-010, as applicable, dated 11 December 1996 or as revised 24 February 1997. If creasing is found replace the elevator control rod end assembly.

Install a new washer, Part Number (P/N) AN970-4, and replace the bolt P/N NAS6604D31 with a new bolt P/N NAS6604D34 on the elevator control rod end bearing assembly at the walking beam connection, in accordance with Fairchild SB 26-27-30-046, 226-27-060, 227-27-041 or CC7-27-010, as applicable, dated 11 December 1996 or as revised 24 February 1997.

Note: FAA AD 97-02-02 requirements (b) and (c) refer.

Compliance For Requirement 1 and 2, unless already accomplished, before 75 hours time in service after 1 January 1998.

Note: The requirements may have been accomplished in conjunction with the actions required by AD/SWSA226/79.

This airworthiness directive becomes effective on 1 January 1998.

Background The elevator control rod end bearing retainers have been found deformed or creased on a number of aircraft. The creasing is caused by improper installation and may allow the bearing to come apart, disconnecting the joint and causing loss of pitch control.

Source text

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

1 AD/SWSA226/82 - Elevator Control Rod End Bearing