Commonwealth legislation

AD/AE 2100/1 - High Pressure Turbine Wheel

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

Makes mandatory a one‑time acid‑etch inspection of specified 2nd‑stage high‑pressure turbine wheels on Rolls‑Royce (Allison) AE 2100A/C/D3 turboprop engines (certain part and serial numbers). If damage is found the wheel must be replaced, and wheels listed in Table 2 may not be installed unless inspected. The directive adopts manufacturer service-bulletin instructions as compulsory action to correct an identified unsafe condition (Applicability; Requirement 1–3).

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/AE 2100/1 - High Pressure Turbine Wheel.

AIRWORTHINESS DIRECTIVE

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

Rolls Royce (Allison) Turbine Engines - AE 2100 Series

AD/AE 2100/1 High Pressure Turbine Wheel

AD/AE 2100/1 High Pressure Turbine Wheel 7/2004

Applicability: Rolls-Royce Corporation (formerly Allison Engine Company) models AE 2100A and AE 2100C turboprop engines with high pressure turbine (HPT) wheel part number (P/N) 23050912 installed; AE 2100A turboprop engine with turbine wheel P/N 23063462 serial number (SN) MM14062 installed; AE 2100A, AE 2100C, AE 2100D3 turboprop engines with 2nd stage HPT wheels with SN's prior to MM183060.

Requirement: 1. Perform a one-time acid etch inspection to the 2nd stage high pressure turbine wheel in accordance with the Accomplishment Instructions contained in the following Rolls-Royce Alert Service Bulletins, Table 1.

Table 1.

AE models	Rolls-Royce service bulletin
AE 2100A	AE 2100A-A-72-234, Revision 2, dated October 13, 2000 orRevision 3, dated June 19, 2001.
AE 2100C	AE 2100C-A-72-183, Revision 2, dated October 13, 2000 orRevision 3, dated June 19, 2001.
AE 2100D3	AE 2100D3-A-72-179, Revision 2, dated October 13, 2000 orRevision 3, dated June 19, 2001.

2. If damage is discovered, replace the turbine wheel with a serviceable part.

3. Do not install any 2nd-stage gas-generator turbine wheel listed in Table 2 of this Directive, unless it has been inspected as specified in Requirement 1 of this Directive.

Note: FAA AD 2001-17-31 Amdt 39-12423 refers.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

Rolls Royce (Allison) Turbine Engines - AE 2100 Series

AD/AE 2100/1 High Pressure Turbine Wheel AD/AE 2100/1 High Pressure Turbine Wheel 7/2004

AD/AE 2100/1 High Pressure Turbine Wheel 7/2004

Table 1.

AE models	Rolls-Royce service bulletin
AE 2100A	AE 2100A-A-72-234, Revision 2, dated October 13, 2000 orRevision 3, dated June 19, 2001.
AE 2100C	AE 2100C-A-72-183, Revision 2, dated October 13, 2000 orRevision 3, dated June 19, 2001.
AE 2100D3	AE 2100D3-A-72-179, Revision 2, dated October 13, 2000 orRevision 3, dated June 19, 2001.

2. If damage is discovered, replace the turbine wheel with a serviceable part.

3. Do not install any 2nd-stage gas-generator turbine wheel listed in Table 2 of this Directive, unless it has been inspected as specified in Requirement 1 of this Directive.

Note: FAA AD 2001-17-31 Amdt 39-12423 refers.