AD 83-10-06 R1

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AD Number:
83-10-06 R1
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Pilatus Model BN-2, BN-2A and BN-2B Islander Series Airplanes
Subject:
Elevator Trim Tabs
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
02/12/1987
Make:
B-N Group Ltd.
Model:
BN-2 | BN-2A | BN-2A-2 | BN-2A-20 | BN-2A-21 | BN-2A-26 | BN-2A-27 | BN-2A-3 | BN-2A-6 | BN-2A-8 | B...Show more
Product Type:
Aircraft
Product Subtype:
Small Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 83-10-06 R1
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5507

AD NUMBER:   83-10-06 R1

SUBJECT HEADING:   Airworthiness Directives; Pilatus Model BN-2, BN-2A and BN-2B Islander Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective February 12, 1987.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   83-10-06 R1 PILATUS BRITTEN-NORMAN LTD: Amendment 39-4656 as amended by Amendment 39-5507. Applies to Models BN-2, BN-2A and BN-2B Islander Series (all serial numbers) airplanes certificated in any category.

Compliance: Required as indicated, unless already accomplished.

To prevent structural failure of the elevator trim tabs, accomplish the following:
a) For those airplanes not incorporating Mod NB/M/1117, within the next 10 hours time-in-service after the effective date of this AD or within 10 hours time-in-service from the last inspection per AD 83-07-03 and thereafter at intervals not to exceed 10 hours time-in-service:
1) Visually inspect, using a 5x power magnifying glass, the elevator trim tab skins, front channel member (spar) and drive ribs for cracks in accordance with the instructions contained in the "inspection" section of Pilatus Britten-Norman Ltd., Service Bulletin (S/B) No. BN-2/SB.142, Issue 4, dated January 22, 1986 (hereinafter referred to as the S/B), or an FAA-approved equivalent.
2) Visually inspect elevator trim tabs for loose or broken rivets.
3) Visually inspect elevator trim tab hinges for damage or excessive wear.
4) Visually inspect the trim tab operating system for backlash in accordance with the instructions provided in the "Inspection" section of the SB.
5) Before further flight, repair any defects found during accomplishment of paragraphs a)1), a)2), a)3), or a)4) of this AD, in accordance with the instructions contained in the "Rectification (Pre-Mod NB/M/1117 Long Span Tabs)" section of the SB and/or instructions provided by Pilatus Britten-Norman, Ltd., Bembridger, Isle of Wight, England, and approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Office, FAA, c/o American Embassy, Brussels, Belgium.
6) The actions required by paragraphs a)1) through a)4) of this AD may be performed by the pilot, providing:
i) The pilot's logbook has been endorsed by a properly rated mechanic stating that the pilot has been trained to conduct these inspections in accordance with this AD, and
ii) These inspections are performed at least once each 100 hours time-in-service by a properly rated mechanic.

b) For those airplanes which have incorporated Mod. NB/M/1117, the intervals between repetitive inspections specified in paragraph a) of this AD may be increased to 100 hours time-in-service (as prescribed in the Airplane Maintenance Schedules (Pub. Ref. MS/1 and MS/4), and with the instructions in the Airplane Maintenance Manual (Pub. Ref. MM/1)).

c) Any airplane which incorporates a Collins AP107 Autopilot (Mod NB/M/911) is not eligible for incorporation of Mod NB/M/1117 unless the autopilot system has been modified to conform with Appendix 6 (Issue II or later) of Mod NB/M/911 in accordance with SB No. BN- 2/SB156, dated March 14, 1983.

d) The intervals between the repetitive inspections required by this AD may be adjusted up to 10 percent of the specified interval to allow accomplishing these inspections concurrent with other scheduled maintenance of the airplane.

e) Aircraft may be flown in accordance with FAR 21.197 to a location where this AD can be accomplished.

An equivalent means of compliance with this AD may be used if approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa, and Middle East Office, FAA, c/o American Embassy, B-1000 Brussels, Belgium.

All persons affected by this directive may obtain copies of the document referred to herein upon request to Pilatus Britten-Norman Ltd., Bembridge, Isle of Wight, England; or FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106.

Amendment 39-4656 superseded AD 83-07-03, Amendment 39-4602. Amendment 39- 4656 became effective on June 2, 1983.
This amendment, 39-5507, becomes effective on February 12, 1987.

FOOTER: