Commonwealth legislation

AD/DHC-8/59 - Bonded Skin Panel Integrity

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of Bombardier DHC‑8 Series 100 and 300 aeroplanes (serial numbers 215–341) to correct modification logs, identify panels that need bonded-skin integrity checks, add those inspections to the approved maintenance plan, and perform ultrasonic inspections per Bombardier procedures. It responds to inconsistencies between test-manual effectivity tables and aircraft modification records. Operators and their maintenance organisations bear the costs and labour for record updates and nondestructive testing; the AD prescribes specific procedures and compliance deadlines.

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AD/DHC-8/59 - Bonded Skin Panel Integrity

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes

AD/DHC-8/59 Bonded Skin Panel Integrity 13/98

Applicability: Model DHC-8 Series 100 and 300 aircraft, serial numbers 215 through 341. Requirement: 1. a. Correct the Aircraft Log Book by revising the individual aircraft Modification

Logs in accordance with the instructions detailed in Part A of Section III,

Accomplishment Instructions, of Bombardier Service Bulletin 8-51-2 dated 9 July 1998 or 8-51-2 Revision A dated 19 September 1998.

b. Determine which panels on the affected aircraft require bonding integrity inspections in accordance with the procedures detailed in Part B of Section III, Accomplishment Instructions, of above mentioned service bulletin(s).

c. Revise the Approved Maintenance Plan by incorporating the Bonding Integrity Inspections identified as Task 5500/01 and Task 5700/01 in the Airworthiness Limitations List.

2. Conduct the initial ultrasonic bond inspection of the panels identified in paragraph 1(b) above, using the procedure specified below:

For Series 100 aircraft \- Bombardier document PSM 1-8-7A, Part 5, section 55- 00-01 and/or 57-30-01; and,

b. For Series 300 aircraft \- Bombardier document PSM 1-83-7A, Part 5, section 55-00-01 and/or 57-30-01.

Note: Transport Canada AD CF-98-31 refers.

Compliance: 1. Unless already accomplished, before 3 January 1999.

At the next convenient maintenance opportunity, but before 30 September 1999. This Airworthiness Directive becomes effective on 3 December 1998.

Background: The manufacturer’s investigation of an operator’s query has revealed inconsistencies between the effectivity tables for the Bond Integrity Inspection (BII) in the non- destructive testing manuals and the modification status record in Aircraft Modification logs. As a result of these inconsistencies, some of the bonded skin panels on affected aircraft are not being inspected under the BII program even though they were manufactured with panels that require a bonding integrity inspection.

Source text

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

1 AD/DHC-8/59 - Bonded Skin Panel Integrity