AD 95-24-13 ACTIVE

This action makes a correction to Airworthiness Directive (AD) 95-24-13 concerning Jetstream Aircraft Limited (JAL) HP137 Mk1, Jetstream Series 200, and Jetstream Models 3101 and 3201 airplanes, which published in the Federal Register on December 22, 1995 (60 FR 246). That publication incorrectly references the number of aileron mounting spigot nut assemblies to be replaced on the wings of the airplanes. The AD currently requires "replacing the securing nut assemblies and split pins with new special nut assemblies (Part No. SL5022 (Qty. 2))". The intent of the AD is to require replacement of 2 special aileron mounting spigot nut assemblies on each wing, for a total of 4 nut assemblies. The Final Rule AD did not specify "each wing", and mentioned that only 2 nut assemblies are required, instead of 4 nut assemblies. This action corrects the AD to reflect this change.

Final rule; correction

95-24-13 JETSTREAM AIRCRAFT LIMITED: Amendment 39-9443; Docket No. 95-CE-27-AD.
Applicability: Model HP137 Mk1, Jetstream Series 200, and Jetstream Models 3101 and 3201 airplanes (all serial numbers), certificated in any category.

NOTE 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

Compliance: Required within the next 6 calendar months after the effective date of this AD, unless already accomplished.

To prevent damage to the aileron control systems, which, if not detected and corrected, could cause loss of lateral control and eventual loss of control of the airplane, accomplish the following:

(a) Inspect the left and right wing mounting spigots for cracks using both visual and fluorescent dye penetrant methods in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Jetstream Service Bulletin (SB) 57-JA 921140, which incorporates the following pages and revision levels:

Pages
Revision Level
Date
4, 5, 8, 9, 10,
12, 13 and 14

Original Issue

February 24, 1993

1, 2, 3, 6, 7, and 11
Revision 1
February 3, 1994

(1) Prior to further flight, replace any cracked spigots with applicable parts specified in the Parts Table in paragraph 5 of the ACCOMPLISHMENT INSTRUCTIONS section of Jetstream SB 57-JA 921140.

(2) Prior to further flight,replace the securing nut assemblies and split pins on both wings with new special nut assemblies (Part No. SL45022 (Qty. of 2 on each wing, total Qty. of 4 nut assemblies needed)), and new split pins (Part No. SP90-C8 and SP90-C6), in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Jetstream SB 57-JA 921140. This replacement is required regardless of the results of the inspection required in paragraph (a) of this AD.

(b) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished.

(c) An alternative method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Brussels Aircraft Certification Office, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, B-1000 Brussels, Belgium or the Small Airplane Directorate, Airplane Certification Service, FAA, 1201 Walnut, suite 900, Kansas City, Missouri 64105. The request shall be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Office.

NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Brussels Aircraft Certification Office.

(d) The inspections and replacements required by this AD shall be done in accordance with Jetstream Service Bulletin 57-JA 921140, which incorporates by reference. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Jetstream Aircraft Limited, Prestwick International Airport, Ayrshire, KA9 2RW, Scotland, or Jetstream Aircraft Inc., Librarian, P.O. Box 16029, Dulles International Airport, Washington, D.C. 20041-6029. Copies may be inspected at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 800 North Capitol Street, NW., 7th Floor, suite 700, Washington, DC.

(e) This amendment (39-9443) becomes effective on January 17, 1996.

On November 17, 1995, the Federal Aviation Administration (FAA) issued AD 95-24-13, Amendment 39-9443 (60 FR 246, December 22, 1995), which applies to JAL HP 137 Mk1, Jetstream series 200, and Jetstream Models 3101 and 3201 airplanes. This AD requires inspecting (one-time) the threaded portion of the aileron mounting spigots for cracks, replacing any cracked spigots, and replacing the securing nut assemblies with newly designed special nut assemblies and new split pins.

Need for the Correction
The AD incorrectly references the quantity of special nut assemblies, inferring that a quantity of 2 assemblies be replaced without indicating that the 2 assemblies on each wing (left wing and right wing) should be replaced.

Correction of Publication
Accordingly, the publication of December 22, 1995 (60 FR 246) of Amendment 39-9443; AD 95-24-13, which was the subject of FR Doc. 95-66485, is corrected as follows:

Section 39.13 [Corrected]
On page 66486, in the third column, Section 39.13, paragraph (a), line 1 through line 4, replace "Inspect the mounting spigots for cracks both visual and fluorescent dye penetrant methods in accordance with the ACCOMPLISHMENT INSTRUCTIONS..." with "Inspect the left and right wing mounting spigots for cracks using both visual and fluorescent dye penetrant methods in accordance with the ACCOMPLISHMENT INSTRUCTIONS...".

On page 66486, in the third column, section 39.13, paragraph (a)(2), line 1 through line 5, replace "Prior to further flight, replace the securing nut assemblies and split pins with new special nut assemblies (Part No. SL45022 (Qty. 2))," with "Prior to further flight, replace the securing nut assemblies and split pins on both wings with new special nut assemblies (Part No. SL45022 (Qty. of 2 on each wing, total Qty. of 4 nut assemblies needed)),".

Action is taken herein to clarify this requirement of AD 95-24-13 and to correctly add this AD correction to section 39.13 of the Federal Aviation Regulations (14 CFR 39.13).

The effective date remains January 17, 1996.

Ms. Dorenda Baker, Program Officer, Brussels Aircraft Certification Office, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, B-1000 Brussels, Belgium; telephone (322) 508.2715; facsimile (322) 230.6899; or Mr. Jeffrey Morfitt, Project Officer, Small Airplane Directorate, Airplane Certification Service, FAA, 1201 Walnut, suite 900, Kansas City, Missouri 64105; telephone (816) 426-6934; facsimile (816) 426-2169.