Commonwealth legislation

AD/AT 800/5 Amdt 1 - Aft Fuselage Structure Upper Longeron

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This Airworthiness Directive requires owners/operators of Airtractor AT‑802 and AT‑802A aeroplanes (serials 0001–0139) to inspect the left‑side upper fuselage longeron just forward of the vertical fin attachment for cracks, at serial‑group specific initial hours and then every 100 hours until the longeron is replaced and modified per the manufacturer’s service letter. CASA issued the AD to address reported cracking that can reduce empennage torsional rigidity; the amendment shortens/changes inspection timings and adds a terminating modification.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/AT 800/5 Amdt 1 - Aft Fuselage Structure Upper Longeron.

AD/AT 800/5 Amdt 1 - Aft Fuselage Structure Upper Longeron

View image in the official source

View image in the official source
AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

View image in the official source

Airtractor 800 Series Aeroplanes

AD/AT 800/5

Amdt 1

Aft Fuselage Structure Upper Longeron 10/2004

Applicability: Model AT 802 and AT-802A aircraft, serial numbers 0001 through 0139. Requirement: 1. For Model AT-802 and AT-802A aircraft, serial numbers 0001 through 0004 and

0012 through 0118:

Inspect the upper longeron on the left hand side of the fuselage frame, just forward of the vertical fin front spar attachment, for cracks in accordance with Snow Engineering Co. Service Letter (SL) No. 217A, dated 10 November 2003, as specified in SL No. 195, re-issued 10 November 2003.

2. For Model AT-802 and AT-802A aircraft, serial numbers 0005 through 0011:

Inspect the upper longeron on the left hand side of the fuselage frame, just forward of the vertical fin front spar attachment, for cracks in accordance with SL No. 217A, dated 10 November 2003, as specified in SL No. 195, re-issued 10 November 2003.

3. For Model AT-802 and AT-802A aircraft, serial numbers 0119 through 0139:

Note: FAA AD 2004-15-15 Amdt 39-13749 refers.

Compliance: 1. Initially inspect upon the accumulation of 250 total hours time in service or within the next 100 hours time in service after the last inspection required by the original issue of this Directive, whichever occurs later. Inspect thereafter at intervals not to exceed 100 hours time in service, until the upper longeron is replaced and modified in accordance with SL No. 217B, revised 10 November 2003.

Airtractor 800 Series Aeroplanes

AD/AT 800/5 Amdt 1 (continued)

2. Initially inspect upon the accumulation of 900 total hours time in service or within the next 100 hours time in service after the last inspection required by the original issue of this Directive, whichever occurs later. Inspect thereafter at intervals not to exceed 100 hours time in service, until the upper longeron is replaced and modified in accordance with SL No. 217B, revised 10 November 2003.

3. Initially inspect upon the accumulation of 1,750 total hours time in service or within the next 100 hours time in service after the last inspection required by the original issue of this Directive, whichever occurs later. Inspect thereafter at intervals not to exceed 100 hours time in service, until the upper longeron is replaced and modified in accordance with SL No. 217B, revised 10 November 2003.

This Airworthiness Directive becomes effective on 30 September 2004.

Background: The FAA received reports of three occurrences of cracks found on the left hand upper longeron and upper diagonal support tubes where they intersect on the left side of the fuselage frame just forward of the vertical fin front spar attachment point, on Model AT-602 aircraft. The cracks were found by the pilot and/or ground crew when they noticed excessive movement of the empennage due to the loss of torsional rigidity.

Amendment 1 is issued in response to a new FAA AD, which changes the compliance times, and incorporates new and revised manufacturer service information that contains a terminating action for the repetitive inspection requirement.

View image in the official source

David Villiers

Delegate of the Civil Aviation Safety Authority 20 August 2004

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 8 September 2004.

Source text

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

1 AD/AT 800/5 Amdt 1 - Aft Fuselage Structure Upper Longeron

AIRWORTHINESS DIRECTIVE

Airtractor 800 Series Aeroplanes

AD/AT 800/5

Amdt 1

Aft Fuselage Structure Upper Longeron 10/2004

Applicability: Model AT 802 and AT-802A aircraft, serial numbers 0001 through 0139. Requirement: 1. For Model AT-802 and AT-802A aircraft, serial numbers 0001 through 0004 and

0012 through 0118:

2. For Model AT-802 and AT-802A aircraft, serial numbers 0005 through 0011:

3. For Model AT-802 and AT-802A aircraft, serial numbers 0119 through 0139:

Note: FAA AD 2004-15-15 Amdt 39-13749 refers.