| AD Number | 92-08-08 | Status | Active |
| Effective Date | May 18, 1992 | Issue Date | Not specified |
| Docket Number | 91-CE-73-AD | Amendment | 39-8219 |
| Product Type | ["Aircraft"] | Product Subtype | ["Small Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Viking Air Limited |
| Model(s) | DHC-3 |
92-08-08 DE HAVILLAND: Amendment 39-8219; Docket No. 91-CE-73-AD.
Applicability: Model DHC-3 Otter airplanes (all serial numbers) that have a Servo-Aero Engineering 20000 Series Kit installed on a Pratt & Whitney PT6A-135/135A engine, certificated in any category. Compliance: Required within the next 100 hours time-in-service after the effective date of this AD, unless already accomplished.
To prevent loss of control of the airplane caused by inadvertent engine shutoff, accomplish the following:
(a) Visually inspect the Pratt & Whitney PT6A-135/135A engine to ensure that a fuel condition lever lock, part number (P/N) 20037-18, is installed and ensure that it is correctly assembled in accordance with the instructions in Servo-Aero Service Bulletin SB001, dated July 24, 1990.
(b) If a fuel condition lever lock is not installed or is not assembled in accordance with the instructions in Servo-Aero Service Bulletin SB001, dated July 24, 1990, prior to further flight, install a fuel condition lever position lock, (P/N) 20037-18, in accordance with the instructions in Servo-Aero Service Bulletin SB001, dated July 24, 1990.
(c) 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.
(d) An alternative method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Los Angeles Aircraft Certification Office, 3229 E. Spring Street, Long Beach, California 90806-2425. The request should be forwarded through an FAA Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles Aircraft Certification Office.
NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles Aircraft Certification Office.
(e) The installation required by this AD shall be done in accordance with Servo-Aero Service Bulletin SB001, dated July 24, 1990. 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 Servo-Aero Engineering Inc., 37 Mortensen Avenue, Salinas, California 93905. 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, 1100 L Street, NW, Room 8401, Washington, DC.
(f) This amendment (39-8219) becomes effective on May 18, 1992.