Commonwealth legislation

AD/BELL 407/25 Amdt 1 - Tail Rotor Drive Shaft Bearings

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Commonwealth

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legislative instrument

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This amendment requires operators of Bell 407 helicopters (serial numbers 53000–53579) to carry out replacement, inspection and lubrication tasks on oil cooler blower shaft bearings and inspections/replacement for tail rotor segmented drive‑shaft bearings, and to replace a lubrication‑warning decal, all in accordance with BHTC ASB 407‑04‑63 Revision A. Compliance windows are short: oil cooler tasks within 300 flight hours or by 30 Sept 2004, tail‑rotor tasks within 200 flight hours or by 30 Sept 2004; the amendment is effective 15 Sept 2004. Operators pay and must schedule the mandated maintenance.

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Direct links to the current provisions in AD/BELL 407/25 Amdt 1 - Tail Rotor Drive Shaft Bearings.

2. Oil Cooler Blower Shaft Bearings:

For helicopters S/N 53000 through 53579:

Replace oil cooler blower shaft bearings in accordance with BHTC ASB 407-04-63 Revision A.

b. Inspect oil cooler blower shaft bearings in accordance with BHT ASB 407- 04-63 Revision A.

c. Lubricate oil cooler blower shaft bearings in accordance with BHTC ASB 407-04-63 Revision A.

d. Replace lubrication-warning decal in accordance with BHTC ASB 407-04- 63 Revision A.

3. Tail Rotor Segmented Drive Shaft Bear

3. Tail Rotor Segmented Drive Shaft Bearings:

Replace oil cooler blower shaft bearings in accordance with BHTC ASB 407-04-63 Revision A.

b. Inspect tail rotor drive shaft bearings in accordance with BHTC ASB 407- 04-63 Revision A.

Requirement 2. Oil Cooler Blower Shaft B

Requirement 2. Oil Cooler Blower Shaft Bearings:

Unless previously accomplished, within 300 flight hours from the effective date of this Directive or no later than 30 September 2004, whichever comes first.

b. Effective 30 September 2004; as detailed in Table 1 of BHTC ASB 407-04- 63 Revision A.

c. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

d. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

Requirement 3: Tail Rotor Segmented Driv

Requirement 3: Tail Rotor Segmented Drive Shaft Bearings:

Unless previously accomplished, within 200 flight hours from the effective date of this Directive or no later than 30 September 2004, whichever comes first and as detailed in Table 1 of BHTC ASB 407-04-63 Revision A.

b. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

c. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

d. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

This Amendment becomes effective on 15 September 2004.

Source text

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

2. Oil Cooler Blower Shaft Bearings: 2. Oil Cooler Blower Shaft Bearings:

2. Oil Cooler Blower Shaft Bearings:

For helicopters S/N 53000 through 53579:

Replace oil cooler blower shaft bearings in accordance with BHTC ASB 407-04-63 Revision A.

b. Inspect oil cooler blower shaft bearings in accordance with BHT ASB 407- 04-63 Revision A.

c. Lubricate oil cooler blower shaft bearings in accordance with BHTC ASB 407-04-63 Revision A.

d. Replace lubrication-warning decal in accordance with BHTC ASB 407-04- 63 Revision A.

3. Tail Rotor Segmented Drive Shaft Bear 3. Tail Rotor Segmented Drive Shaft Bearings:

3. Tail Rotor Segmented Drive Shaft Bearings:

Replace oil cooler blower shaft bearings in accordance with BHTC ASB 407-04-63 Revision A.

b. Inspect tail rotor drive shaft bearings in accordance with BHTC ASB 407- 04-63 Revision A.

Requirement 2. Oil Cooler Blower Shaft B Requirement 2. Oil Cooler Blower Shaft Bearings:

Requirement 2. Oil Cooler Blower Shaft Bearings:

Unless previously accomplished, within 300 flight hours from the effective date of this Directive or no later than 30 September 2004, whichever comes first.

b. Effective 30 September 2004; as detailed in Table 1 of BHTC ASB 407-04- 63 Revision A.

c. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

d. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

Requirement 3: Tail Rotor Segmented Driv Requirement 3: Tail Rotor Segmented Drive Shaft Bearings:

Requirement 3: Tail Rotor Segmented Drive Shaft Bearings:

Unless previously accomplished, within 200 flight hours from the effective date of this Directive or no later than 30 September 2004, whichever comes first and as detailed in Table 1 of BHTC ASB 407-04-63 Revision A.

b. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

c. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

d. Effective 30 September 2004; as detailed in Table 2 of BHTC ASB 407-04- 63 Revision A.

This Amendment becomes effective on 15 September 2004.