| AD Number | 91-12-07 | Status | Active |
| Effective Date | July 05, 1991 | Issue Date | Not specified |
| Docket Number | 91-CE-07-AD | Amendment | N/A |
| Product Type | ["Aircraft"] | Product Subtype | ["Small Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Polskie Zaklady Lotnieze Spolka zo.o |
| Model(s) | PZL M18 |
91-12-07 WYTWORNIA SPRZETU KOMUNEKACYJNEGO PZL-MIELEC: Amendment No. 39-7018. Docket No. 91-CE-07-AD.
Applicability: Model M18 airplanes (serial numbers (S/N) 1Z013-21 through 1Z023-30), equipped with an agriculture equipment electro-hydraulic control system (Modification D73.701.00.1), certificated in any category.
Compliance: Required as indicated, unless already accomplished.
To prevent failure of the electro-hydraulic control system that results in loss of flap and brake control, accomplish the following:
(a) For S/N 1Z013-21 through 1Z023-30 airplanes, upon the accumulation of 200 hours time-in- service (TIS) or within the next 25 hours TIS after the effective date of this AD, whichever occurs later, replace each flexible hose having part number (P/N) D73.7/21.00.0 or D73.7/24.00.0. with a new hose in accordance with the instructions in PZL-Mielec Mandatory Engineering Bulletin (MEB) No. K/02.141/90, dated April 1990.
(1) If hoses are replaced with either P/N D73.7/21.00.0 or D73.7/24.00.0, replace these hoses at intervals not to exceed 200 hours TIS.
(2) If hoses are replaced with P/N D73.7/26.00.0 or D73.7.25.00.0 hose, no further action is required.
(b) For S/N 1Z013-21 through 1Z022-05 airplanes, upon the accumulation of 500 hours TIS or within the next 100 hours TIS after the effective date of this AD, whichever occurs later, modify the electro- hydraulic control system in accordance with the instructions in Paragraph III, 2. of PZL-Mielec MEB No. K/02.141/90, dated April 1990.
(c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a location where the requirements of this AD can be accomplished.
(d) An alternative method of compliance or adjustment of the initial or repetitive compliance times that provides an equivalent level of safety may be approved by the Manager, Brussels Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Office, c/oAmerican Embassy, B-1000, Brussels, Belgium. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Staff.
(e) The modifications and replacements required by this AD shall be done in accordance with PZL-Mielec Mandatory Engineering Bulletin No. K/02.141/90, dated April 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 PZL-Mielec, Ludowego Wojska Polkiego 3, 39-300 Mielec, Poland. 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.
This amendment (39-7018, AD 91-12-07) becomes effective on July 5, 1991.