86-21-09 BRITISH AEROSPACE (BAe): Amendment 39-5447. Applies to BAe Jetstream Model 3101 (all serial numbers) airplanes certificated in any category which have incorporated Arkansas Modification Center (AMC) Supplemental Type Certificate (STC) No. SA5900SW baggage pod serial numbers 002 through 044 inclusive.
Compliance: Required within the next fifty (50) landings after the effective date of this AD, unless already accomplished.
NOTE: If landings are not recorded, one hour time-in-service (TIS) equals two landings.
To prevent possible chafing of the flap jack lock valve pressure pipe and loss of hydraulic fluid, accomplish the following:
(a) Visually inspect flap jack lock valve hydraulic pressure pipe BAe Part Number (P/N) 616302 for evidence of chafing in accordance with Section 2. "ACCOMPLISHMENT INSTRUCTIONS," Paragraph B "ACCOMPLISHMENTS," of BAe Alert Service Bulletin (ASB) No. 27-A-JA860226, dated August 11, 1986.
(1) If chafing has occurred, before further flight,
(i) Replace hydraulic pressure pipe P/N 616302 with a serviceable airworthy part, in accordance with BAe S/B No. 27-A-JA860226, and
(ii) Modify pod by incorporating an aperture in accordance with Section 2.,
"ACCOMPLISHMENT INSTRUCTIONS," paragraphs 1 through 8 of revised AMC Service Bulletin (S/B) No. 25-0002(-2), dated September 11, 1986.
(iii) Accomplish paragraph (b) of this AD.
(2) If no chafing has occurred, before further flight,
(i) modify pod by incorporating an aperture in accordance with Section 2.,
"ACCOMPLISHMENT INSTRUCTIONS," paragraphs 1 through 8 of AMC S/B No. 25-0002(-2), and
(ii) accomplish paragraph (b) of this AD.
(b) Measure the clearance distance between the flap jack lock valve hydraulic pressure pipe, P/N 616302 and the pod membrane smoke detector mounting screws, over the whole flap position operating range, in accordance with Section 2., "ACCOMPLISHMENT INSTRUCTIONS". If the clearance at all flap positions is:
(1) 0.50 inches or more, install the aperture cover plate provided in AMC Kit P/N 31-5179-37 and accomplish paragraphs 14 through 17 of Section 2., "ACCOMPLISHMENT INSTRUCTIONS," of AMC S/B No. 25-0002(-2), and return the airplane to service.
(2) Less than 0.50 inches,
(i) Modify the pod in accordance with paragraphs 18 through 29 of Section 2.,
"ACCOMPLISHMENT INSTRUCTIONS," of AMC S/B No. 25-0002(-2), and
(ii) Install baggage pod and repeat the actions specified in paragraph (b) of this AD.
(c) Aircraft may be flown in accordance with FAR 21.197 to a location where this Airworthiness Directive (AD) can be accomplished.
(d) An equivalent means of compliance with this AD may be used if approved by the Manager, FAA, Southwest Region, Special Programs Branch, ASW-190, 4400 Blue Mound Road, Post Office Box 1689, Fort Worth, Texas 76101.
All persons affected by this AD may obtain copies of Arkansas Modification Center, Inc., (AMC) Service Bulletin (S/B) No. 25-0002(-2) dated July 22, 1986, Revised September 11, 1986, referred to herein upon request to the Arkansas Modification Center, Inc., Post Office Box 3356, Adams Field, Little Rock, Arkansas 72203, and Alert Service Bulletin No. 27-A- JA860226, dated August 11, 1986, referred to herein upon request to the British Aerospace, Engineering Department, Post Office Box 17414, Dulles International Airport, Washington, D.C. 20041; or FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106.
This amendment becomes effective October 29, 1986.