Commonwealth legislation

AD/G1159/39 - Landing Gear Door Control Valves

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Jurisdiction

Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of Gulfstream G-1159, G-1159A/B, G‑IV and G‑V series aeroplanes to inspect for landing-gear-door control valves with specified Gulfstream and Eaton/Sterer part numbers and, if found, replace the set screw, apply Dow Corning RTV 732 sealant and relabel the valve per Gulfstream Alert Customer Bulletins (Requirement 1–2). It also prohibits installing affected valves unless they are modified as required or already carry the revised part number (Requirement 3). Operators pay for inspection and modification and must ensure future installs meet the AD.

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AIRWORTHINESS DIRECTIVE

View image in the official source

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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 CAR 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.

AD/G1159/39 Landing Gear Door Control Va

AD/G1159/39 Landing Gear Door Control Valves 7/2001

Applicability: Gulfstream Model G-1159, G-1159A, G-1159B, G-IV, and G-V series aeroplanes.

Requirement: 1. Perform a visual inspection to determine if any landing gear door control valve having Gulfstream part number (P/N) 1159SCH231-33 with Eaton/Sterer P/N 65940-1, -1 Rev. A, or -1 Rev. B, is installed.

No further action is required if there are no P/N 1159SCH231-33 with Eaton/Sterer P/N 65940-1, -1 Rev. A, or -1 Rev. B valves installed on the aircraft.

2. If during the inspection, any landing gear door control valve having P/N 1159SCH231-33 with Eaton/Sterer P/N 65940-1, \-1 Rev. A, or \-1 Rev. B is found:

Replace the set screw with a new set screw, fill with Dow Corning RTV 732 sealant, and label the valve as P/N 65490-1 Rev. C; in accordance with; Gulfstream G-II Alert Customer Bulletin (ACB) No. 27 (for Model G-1159 and G- 1159A series aeroplanes); G-III ACB No. 13 (for model G-1159B series aeroplanes); G-IV ACB No. 27 (for Model G-IV series aeroplanes); and G-V ACB No.12 (for Model G-V series aeroplane); all dated 20 March 2001, as applicable.

3. Do not install a landing gear door control valve unless it

(a) has been modified according to Requirement 2 or

(b) is of P/N 1159CH231-33 with Eaton/Sterer P/N 65940-1, Rev. C.

Note: FAA AD 2001-08-13 refers.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

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 CAR 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.

AD/G1159/39 Landing Gear Door Control Va AD/G1159/39 Landing Gear Door Control Valves 7/2001

AD/G1159/39 Landing Gear Door Control Valves 7/2001

Applicability: Gulfstream Model G-1159, G-1159A, G-1159B, G-IV, and G-V series aeroplanes.

No further action is required if there are no P/N 1159SCH231-33 with Eaton/Sterer P/N 65940-1, -1 Rev. A, or -1 Rev. B valves installed on the aircraft.

2. If during the inspection, any landing gear door control valve having P/N 1159SCH231-33 with Eaton/Sterer P/N 65940-1, \-1 Rev. A, or \-1 Rev. B is found:

3. Do not install a landing gear door control valve unless it

(a) has been modified according to Requirement 2 or

(b) is of P/N 1159CH231-33 with Eaton/Sterer P/N 65940-1, Rev. C.

Note: FAA AD 2001-08-13 refers.