AD 81-14-07 R1

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AD Number:
81-14-07 R1
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BRITISH AEROSPACE Model BAC 1-11 200 and 400 Series Airplanes
Subject:
Flap Track Attachment Brackets
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
11/03/1983
Make:
Airbus SAS
Model:
BAC 1-11 200 Series | BAC 1-11 400 Series
Product Type:
Aircraft
Product Subtype:
Large 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Superseded AD: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Superseded By: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: 81-14-07 R1
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-4738

AD NUMBER:   81-14-07 R1

SUBJECT HEADING:   Airworthiness Directives; BRITISH AEROSPACE Model BAC 1-11 200 and 400 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective November 3, 1983.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   81-14-07 R1 BRITISH AEROSPACE, AIRCRAFT GROUP: Amendment 39-4153 as amended by Amendment 39-4738. Applies to Model BAC 1-11 200 and 400 Series airplanes, certificated in all categories.

Compliance required as indicated, unless already accomplished.

To prevent possible failures of flap track attachment brackets, accomplish the following:

(a) Inspect flap track attachment brackets (hereinafter referred to as brackets) for cracks at flap track location 4 (LH) which do not have British Aerospace, Aircraft Group, Modification 57-PM4948 Part (a) or (c) incorporated, and brackets at flap track location 4 (RH) which do not have Modification 57-PM4948 Part (b) or (d) incorporated, in accordance with paragraph (e) of this AD as follows:

(1) For 200 Series airplanes, within the next 50 landings after the effective date of this AD, or before the accumulation of 10,000 landings, whichever occurs later, unless already accomplished within the last 800 landings, and thereafter at intervals not to exceed 850 landings from the last inspection.

(2) For 400 Series airplanes, within the next 50 landings after the effective date of this AD, or before the accumulation of 8,000 landings, whichever occurs later, unless already accomplished within the last 800 landings, and thereafter at intervals not to exceed 850 landings from the last inspection.

(b) Inspect brackets for cracks at flap track location 4 (LH) which have British Aerospace, Aircraft Group, Modification 57-PM4948 Part (a) or (c) incorporated, and brackets at flap track location 4 (RH) which have Modification 57-PM4948 Part (b) or (d) incorporated, in accordance with paragraph (e) of this AD as follows:

(1) For both 200 and 400 Series airplanes, on which the brackets were modified after the original manufacture (i.e., Modification 57-PM4948 Part (a) or (b)), within the next 300 landings after the effective date of this AD, or before the accumulation of 5,000 landings, whichever occurs later, unless already accomplished within the last 2,100 landings, and thereafter at intervals not to exceed 2,400 landings from the last inspection.

(2) For both 200 and 400 Series airplanes, on which the modified brackets were installed at the time of original manufacture (i.e., Modification 57-PM4948 Part (c) or (d)), within the next 300 landings after the effective date of this AD, or before the accumulation of 10,000 landings, whichever occurs later, unless already accomplished within the last 2,100 landings, and thereafter at intervals not to exceed 2,400 landings from the last inspection.

(c) Inspect brackets for cracks at flap track location 2 (LH and RH) which do not have British Aerospace, Aircraft Group, Modification 57-PM3065 Part (a) or (b) incorporated, and brackets at flap track location 3 (RH and LH) which do not have Modification 57-PM3065 Part (c) or (d) incorporated, in accordance with paragraph (e) of this AD as follows:

(1) For 200 Series airplanes, within the next 50 landings after the effective date of this AD, or before the accumulation of 15,000 landings, whichever occurs later, unless already accomplished within the last 800 landings, and thereafter at intervals not to exceed 850 landings from the last inspection.

(2) For 400 Series airplanes, within the next 50 landings after the effective date of this AD, or before the accumulation of 12,000 landings, whichever occurs later, unless already accomplished within the last 800 landings, and thereafter at intervals not to exceed 850 landings from the last inspection.

(d) Inspect brackets for cracks at flap track location 2 (LH and RH) which have British Aerospace, Aircraft Group, Modification 57-PM3065 Part (a) or (b) incorporated, and brackets at flap track location 3 (LH and RH) which have Modification 57-PM3065 Part (c) or (d) incorporated, in accordance with paragraph (e) of this AD as follows:

(1) For both 200 and 400 Series airplanes, on which the brackets were modified after the original manufacture (i.e., Modification 57-PM3065 Part (a) or (c)), within the next 600 landings after the effective date of this AD, or before the accumulation of 10,000 landings, whichever occurs later, unless already accomplished within the last 1,800 landings, and thereafter at intervals not to exceed 2,400 landings from the last inspection.

(2) For both 200 and 400 Series airplanes, on which the modified brackets were installed at the time of original manufacture (i.e., Modification 57-PM3065 Part (b) or (d)), within the next 600 landings after the effective date of this AD, or before the accumulation of 20,000 landings, whichever occurs later, unless already accomplished within the last 1,800 landings, and thereafter at intervals not to exceed 2,400 landings from the last inspection.

(e) Inspect the flap track attachment brackets for cracks in accordance with paragraphs 2.1.1 (flap track location 4, pre-Modification 57-PM4948); 2.2.3 (flap track location 4, post Modification 57-PM4948); 2.3.1 (flap track location 3, both pre and post Modification 57- PM3065); and 2.5.1 (flap track location 2, both pre and post Modification 57-PM3065) of British Aerospace, Aircraft Group, Model BAC 1-11 Alert Service Bulletin 57-A-PM4948, Issue 5, dated January 28, 1981 (hereinafter referred to as the service bulletin), or an FAA-approved equivalent.

(f) If cracks are found during any of the inspections required by this AD which do not exceed the allowable lengths specified in Table 1, Column (1) and "Qualifying Remarks" (for the appropriate flap track location), of the service bulletin, or an FAA-approved equivalent, the bracket may remain in service provided it is inspected in accordance with paragraph (e) of this AD at intervals not to exceed 200 landings from initial crack detection.

(g) If cracks are found during any of the inspections required by this AD which exceed the allowable limits of Table 1, Column (1), and "Qualifying Remarks," but do not exceed the allowable limits of Table 1, Column (2), and "Qualifying Remarks for Increased Crack Lengths Special Cases" (for the appropriate flap track location) of the service bulletin, or an FAA-approved equivalent, the bracket may remain in service provided it is inspected in accordance with paragraph (e) of this AD at intervals not to exceed 25 landings from the initial crack detection.

(h) Cracked brackets may be repaired in accordance with the limitations specified in Table 2 (for the appropriate flap track location) of the service bulletin, or an FAA-approved equivalent. Inspect repaired brackets in accordance with paragraph (e) of this AD at intervals not to exceed 850 landings from the time of repair.

(i) If cracks are found during any of the inspections required by this AD which exceed the allowable limits specified in Table 1 (for the appropriate flap track location) of the service bulletin, or an FAA-approved equivalent, before further flight, except that the airplane may be flown in accordance with FAR 21.197 and 21.199 to a base where the repairs can be performed, replace the bracket with a new bracket to post Modification 57-PM4948 or 57- PM3065 standard, as appropriate. Thereafter, continue to inspect the bracket in accordance with the inspection requirements of this AD.

(j) When both brackets of a pair at the same flap track location are required to be inspected at different intervals, inspect both brackets using the inspection interval specified for the bracket of the pair which has the shorter intervals between inspections.

(k) When both brackets of a pair at the same flap track location are to post Modification 57-PM4948 or 57-PM3065 standard, as appropriate, the threshold for initial inspection of the later installed bracket must be based on the installation date of the earlier installed bracket.

(l) For the purpose of complying with this AD, where the number of landings for the affected part have not been recorded, subject to acceptance by the assigned FAA maintenance inspector, the number of landings may be determined by dividing the total number of airplane flight hours in service since installation of the part by the operator's BAC 1-11 fleet average time from takeoff to landing.

(m) Upon request of an operator and submission of substantiating data, the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region may adjust the inspection intervals.

(n) Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to British Aerospace, Aircraft Group, 13850 McLearen Road, Herndon, Virginia 22070. These documents may be examined at FAA Headquarters, Room 916, 800 Independence Avenue, SW., Washington, DC 20591.

This amendment supersedes Amendment 39-1348 (36 FR 22365), AD 71-25-01.

Amendment 39-4153 became effective July 13, 1981.

This Amendment 39-4738 becomes effective November 3, 1983.

FOOTER: