AD 87-03-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Polskie Zaklady Lotnieze Spolka zo.o | PZL M18 | Airworthiness Directives; Wytwornia Model M18 Series Airplanes |
Unsafe Condition
Loosening of the engine mount shock absorber nuts could lead to engine separation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace 0.8mm safety wire on M6400-105 nuts with 1.0 to 1.2mm wire as per MSB No. E/02.082/85. Visually inspect the nuts for security every 100 hours TIS and tighten if loose. Perform engine frame modification within 600 hours TIS or next engine frame removal, whichever comes first. Discontinue inspections after modification completion.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 100 hours time-in-service (TIS) unless already accomplished, with subsequent inspections every 100 hours TIS. Engine frame modification must be done within 600 hours TIS or next engine frame removal, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Wytwornia Model M18 Dromader airplanes with serial numbers 1Z001-01 through 1Z014-30, and 1Z015-01 through 1Z016-03.
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Federal Register Abstract
Engine Mount Nuts
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_87-03-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 87-03-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Wytwornia Model M18 Series Airplanes Subject: Engine Mount Nuts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/01/1987 Make: Polskie Zaklady Lotnieze Spolka zo.o Model: PZL M18 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 87-03-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5522 AD NUMBER: 87-03-09 SUBJECT HEADING: Airworthiness Directives; Wytwornia Model M18 Series Airplanes ACTION: SUMMARY: DATES: Effective March 1, 1987. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 87-03-09 WYTWORNIA SPRZETU KOMUNIKACYJNEGO, PZL-MIELEC: Amendment 39-5522. Applies to Model M18 Dromader (Serial Number 1Z001-01 through 1Z014-30, and 1Z015-01 through 1Z016-03) airplanes certificated in any category. Compliance: Required as indicated after the effective date of this AD, unless already accomplished. To prevent loosening of the engine mount shock absorber nuts, accomplish the following: (a) Within the next 100 hours time-in-service (TIS), replace all 0.8mm safety wire on the M6400- 105 nuts with 1.0 to 1.2mm (0.039 inch to 0.047 inch) wire as described in paragraph III.1, PZL-Mielec M18 Mandatory Service Bulletin (MSB) No. E/02.082/85 dated September 6, 1985. (b) Within the next 100 hours TIS and at each 100 hours TIS thereafter, visually inspect the Part Number M6400-105 nuts for security. If loose, prior to further flight, tighten and secure as described in paragraph III.2 of the subject MSB. (c) Within the next 600 hours TIS or the next time the engine frame is removed, whichever occurs first, perform the engine frame modification described in paragraph III.3 of the subject MSB. (d) The actions in paragraph (b) of this AD may be discontinued after accomplishment of the modification described in paragraph (c) of this AD. (e) Aircraft may be flown in accordance with Federal Aviation Regulation 21.197 to a location where this AD can be accomplished. (f) The intervals between the repetitive inspections required by this AD may be adjusted up to 10 percent of the specified interval to allow accomplishment of these inspections concurrent with other scheduled maintenance on the airplane. (g) An equivalent means of compliance with this AD, if used, must be approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Office, FAA, c/o American Embassy, B- 1000 Brussels, Belgium. All persons affected by this directive may obtain copies of the documents referred to herein upon request to Wytwornia Sprzetu Komunikacyjnego; or FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment becomes effective on March 1, 1987. FOOTER:
Document Text
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AD Final Rules - DRS_87-03-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 87-03-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Wytwornia Model M18 Series Airplanes Subject: Engine Mount Nuts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/01/1987 Make: Polskie Zaklady Lotnieze Spolka zo.o Model: PZL M18 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 87-03-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5522 AD NUMBER: 87-03-09 SUBJECT HEADING: Airworthiness Directives; Wytwornia Model M18 Series Airplanes ACTION: SUMMARY: DATES: Effective March 1, 1987. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 87-03-09 WYTWORNIA SPRZETU KOMUNIKACYJNEGO, PZL-MIELEC: Amendment 39-5522. Applies to Model M18 Dromader (Serial Number 1Z001-01 through 1Z014-30, and 1Z015-01 through 1Z016-03) airplanes certificated in any category. Compliance: Required as indicated after the effective date of this AD, unless already accomplished. To prevent loosening of the engine mount shock absorber nuts, accomplish the following: (a) Within the next 100 hours time-in-service (TIS), replace all 0.8mm safety wire on the M6400- 105 nuts with 1.0 to 1.2mm (0.039 inch to 0.047 inch) wire as described in paragraph III.1, PZL-Mielec M18 Mandatory Service Bulletin (MSB) No. E/02.082/85 dated September 6, 1985. (b) Within the next 100 hours TIS and at each 100 hours TIS thereafter, visually inspect the Part Number M6400-105 nuts for security. If loose, prior to further flight, tighten and secure as described in paragraph III.2 of the subject MSB. (c) Within the next 600 hours TIS or the next time the engine frame is removed, whichever occurs first, perform the engine frame modification described in paragraph III.3 of the subject MSB. (d) The actions in paragraph (b) of this AD may be discontinued after accomplishment of the modification described in paragraph (c) of this AD. (e) Aircraft may be flown in accordance with Federal Aviation Regulation 21.197 to a location where this AD can be accomplished. (f) The intervals between the repetitive inspections required by this AD may be adjusted up to 10 percent of the specified interval to allow accomplishment of these inspections concurrent with other scheduled maintenance on the airplane. (g) An equivalent means of compliance with this AD, if used, must be approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Office, FAA, c/o American Embassy, B- 1000 Brussels, Belgium. All persons affected by this directive may obtain copies of the documents referred to herein upon request to Wytwornia Sprzetu Komunikacyjnego; or FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment becomes effective on March 1, 1987. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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