AD 72-06-01

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AD Number:
72-06-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11 200 and 400 Series Airplanes
Subject:
Flap Section Pickup Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
04/06/1972
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Superseded AD: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Superseded By: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: 72-06-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1406

AD NUMBER:   72-06-01

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

ACTION:  

SUMMARY:  

DATES:   Effective April 6, 1972.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
72-06-01 BRITISH AIRCRAFT CORPORATION: Amdt. 39-1406. Applies to Model BAC 1-11 200 and 400 series airplanes which do not have BAC Modification PM 4621 Part (b) incorporated on all flap sections.

Compliance is required as indicated.

To prevent failures of the flap forward inboard pick-up fitting assemblies (six per airplane), accomplish the following:

(a) For flap sections with a pick-up fitting assembly with a spigot having P/N AB09- 1723 (pre-Mod. 4621) installed:

(1) Remove the lower inboard access panel and visually inspect the pick-up fitting assembly for failure of the spigot in accordance with British Aircraft Corporation Model BAC 1-11 Alert Service Bulletin No. 57-A-PM 4621, Issue 2, dated July 27, 1970 or an FAA-approved equivalent as follows:

(i) On the inboard (No. 1) flap sections, within the next 650 landings after the effective date of this AD, or before the accumulation of 7,500 landings on the pick-up fitting assembly spigot, whichever occurs later, and thereafter at intervals not to exceed 650 landings from the last inspection until the spigot is replaced in accordance with paragraph (a)(4)(ii), or the assembly is replaced in accordance with paragraph (a)(4)(iii).

(ii) On the center (No. 2) and outboard (No. 3) flap sections, within the next 2,000 landings after the effective date of this AD, or before the accumulation of 7,500 landings on the pick-up assembly spigot, whichever occurs later, and thereafter at intervals not to exceed 2,000 landings from the last inspection until the spigot is replaced in accordance with paragraph (a)(4)(ii), or the assembly is replaced in accordance with paragraph (a)(iii).

(2) If a failed spigot is found during an inspection required by paragraph (a)(1), before further flight comply with paragraph (a)(4).

(3) Within the next 1,000 landings after the effective date of this AD or before the accumulation of 25,000 landings on the pick-up assembly spigot, whichever occurs later, comply with paragraph (a)(4).

(4) Comply with either subparagraph (i), (ii), or (iii).

(i) Replace an affected spigot with a serviceable spigot of the same part number and continue to inspect in accordance with paragraph (a) (1); or

(ii) Replace an affected spigot with an improved spigot, P/N AB09- 3887 (BAC Modification PM 4621, Part (a) in accordance with British Aircraft Corporation Model BAC 1-11 Service Bulletin No. 57-PM 4621, Issue 1, dated May 18, 1970 or an FAA-approved equivalent and inspect in accordance with paragraph (b)(1); or

(iii) Replace the assembly containing the affected spigot with a new assembly (BAC Modification PM 4621, Part (b)) in accordance with British Aircraft Corporation Model BAC 1-11 Service Bulletin No. 57-PM 4621, Issue 1, dated May 18, 1970 or an FAA- approved equivalent.

(b) For flap sections with a pick-up fitting assembly with a spigot having P/N AB09- 3887 (post-Mod. 4621, Part (a)) installed:

(1) Remove the lower inboard access panel and visually inspect the pick-up fitting assembly for failure of the spigot in accordance with British Aircraft Corporation Model BAC 1-11 Alert Service Bulletin No. 57-A-PM 4621, Issue 2, dated July 27, 1970 or an FAA-approved equivalent as follows:

(i) On the inboard (No. 1) flap sections, within the next 650 landings after the effective date of this AD or before the accumulation of 20,000 landings on the pick-up fitting assembly spigot, whichever occurs later, and thereafter at intervals not to exceed 650 landings from the last inspection until the assembly is replaced in accordance with paragraph (b)(4)(ii).

(ii) On the center (No. 2) and outboard (No. 3) flap sections, within the next 2,000 landings after the effective date of this AD or before the accumulation of 20,000 landings on the pick-up fitting assembly, whichever occurs later, and thereafter at intervals not to exceed 2,000 landings from the last inspection, until the assembly is replaced in accordance with paragraph (b)(4)(ii).

(2) If a failed spigot is found during an inspection required by paragraph (b)(1), before further flight comply with paragraph (b)(4).

(3) Within the next 1,000 landings after the effective date of this AD or before the accumulation of 30,000 landings on the pick-up assembly, whichever occurs later, comply with paragraph (b)(4).

(4) Comply with either subparagraph (i) or (ii).

(i) Replace an affected spigot with a serviceable spigot of the same part number and continue to inspect in accordance with paragraph (b)(1); or

(ii) Replace the assembly containing the affected spigot with a new assembly (BAC Modification PM 4621, Part (b)) in accordance with British Aircraft Corporation Model BAC 1-11 Service Bulletin No. 57-PM 4621, Issue 1, dated May 18, 1970 or an FAA- approved equivalent.

This amendment becomes effective April 6, 1972.

FOOTER: