AD 92-27-17

Final rule

92-27-17 SHORT BROTHERS, PLC: Amendment 39-8452. Docket 91-NM-98-AD.
Applicability: All Model SD3-30 and SD3-60 series airplanes, certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent inadvertent engine shutdown, accomplish the following:

(a) Within 120 days after the effective date of this AD, lock the left and right low pressure (LP) levers in the open position using securing wires, in accordance with Shorts Service Bulletins SD330- 28-35 (for Model SD3-30 series airplanes) or SD360-28-20 (for Model SD3-60 series airplanes), both dated February 22, 1991; as applicable.

(b) Within 120 days after the effective date of this AD, following accomplishment of the modification required by paragraph (a) of this AD, revise the Limitations Sections of the FAA-approved Airplane Flight Manual (AFM) by inserting the following amendments, as applicable:

(1)
For Model SD3-30 series airplanes:

SBH3.3 Amendment p/16

SBH3.6 Amendment p/12
(2)
For Model SD3-60 series airplanes:

SB4.3 Amendment p/19

SB4.6 Amendment p/12

SB4.8 Amendment p/14

(c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113.

NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113.

(d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished.

(e) The locking requirement shall be done in accordance with Shorts Service Bulletin SD330- 28-35, dated February 22, 1991, and Shorts Service Bulletin SD360-28-20, dated February 22, 1991. The revisions to the Airplane Flight Manual (AFM) shall be done in accordance with the following list of AFM Amendment Documents and related effective pages:

AFM Amendment
Document Number

Page Number

Section Number
SBH3.3 Amendment p/16
5, 6
3

7, 42
4
SBH3.6 Amendment p/12
5, 6
3

7, 48
4
SB4.3 Amendment p/19
5, 6
3

7, 50
4
SB4.6 Amendment p/12
5, 6
3

7, 50
4
SB4.8 Amendment p/14
5, 6
3

7, 50
4

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 Shorts Brothers, PLC, 2011 Crystal Drive, Suite 713, Arlington, Virginia 22202-3719. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 NorthCapitol Street, NW., suite 700, Washington, DC.

(f) This amendment becomes effective on February 25, 1993.