AD 75-16-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus Aircraft Limited | B4-PC11 | Airworthiness Directives; Pilatus Model B4-PC11 Gliders |
Unsafe Condition
Improper installation of aileron control connecting bolts and potential aileron jamming.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the aileron control connecting bolts to ensure correct orientation per Pilatus B4-PC11 Operating Manual. Shorten bolts P/N 116.35.11.070 or replace with modified bolts per Service Bulletin No. 1003 or FAA-approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next ten hours' time in service after the effective date of this AD and within 25 hours' time in service after the effective date of this AD.
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Affected Aircraft
Pilatus Aircraft Limited Model B4-PC11 gliders, serial numbers up to and including 159.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Aileron Control Bolts
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_75-16-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-16-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Pilatus Model B4-PC11 Gliders Subject: Aileron Control Bolts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/28/1975 Make: Pilatus Aircraft Limited Model: B4-PC11 Product Type: Aircraft Product Subtype: Glider Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 75-16-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2280 AD NUMBER: 75-16-05 SUBJECT HEADING: Airworthiness Directives; Pilatus Model B4-PC11 Gliders ACTION: SUMMARY: DATES: Effective July 28, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-16-05 PILATUS AIRCRAFT LTD: Amendment 39-2280. Applies to B4-PC11 gliders Serial Numbers up to and including 159, certificated in all categories. Compliance is required as indicated. To detect improper aileron control connecting bolt installation and to prevent aileron jamming accomplish the following: (a) Within the next ten hours' time in service after the effective date of this AD, unless already accomplished, visually inspect the aileron control connecting bolts on the aileron control differential bellcrank to ensure the bolts are oriented correctly in accordance with Pilatus B4-PC11 Operating Manual, Figure 1, Page 26, or an FAA-approved equivalent. (b) Within 25 hours' time in service after the effective date of this AD, unless already accomplished, shorten all bolts P/N 116.35.11.070 used on aileron control differential bellcranks and airbrake control bellcranks, in accordance with the accomplishment instructions contained in Pilatus Aircraft Ltd. Service Bulletin No. 1003 dated June 1974, or an FAA- approved equivalent, or replace with modified or replacement bolts supplied by manufacturer or with equivalent FAA-approved bolts. This amendment becomes effective July 28, 1975. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_75-16-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-16-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Pilatus Model B4-PC11 Gliders Subject: Aileron Control Bolts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/28/1975 Make: Pilatus Aircraft Limited Model: B4-PC11 Product Type: Aircraft Product Subtype: Glider Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 75-16-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2280 AD NUMBER: 75-16-05 SUBJECT HEADING: Airworthiness Directives; Pilatus Model B4-PC11 Gliders ACTION: SUMMARY: DATES: Effective July 28, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-16-05 PILATUS AIRCRAFT LTD: Amendment 39-2280. Applies to B4-PC11 gliders Serial Numbers up to and including 159, certificated in all categories. Compliance is required as indicated. To detect improper aileron control connecting bolt installation and to prevent aileron jamming accomplish the following: (a) Within the next ten hours' time in service after the effective date of this AD, unless already accomplished, visually inspect the aileron control connecting bolts on the aileron control differential bellcrank to ensure the bolts are oriented correctly in accordance with Pilatus B4-PC11 Operating Manual, Figure 1, Page 26, or an FAA-approved equivalent. (b) Within 25 hours' time in service after the effective date of this AD, unless already accomplished, shorten all bolts P/N 116.35.11.070 used on aileron control differential bellcranks and airbrake control bellcranks, in accordance with the accomplishment instructions contained in Pilatus Aircraft Ltd. Service Bulletin No. 1003 dated June 1974, or an FAA- approved equivalent, or replace with modified or replacement bolts supplied by manufacturer or with equivalent FAA-approved bolts. This amendment becomes effective July 28, 1975. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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