AD 75-18-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Entwicklungsgemeinschaft Sport- und Segelflug | Phoebus A1 | Airworthiness Directives; Entwicklungsgemeinschaft (Messerschmitt-Bolkow-Blohm GmbH) Model Phoebus A1 and B1 Gliders |
| aircraft | Entwicklungsgemeinschaft Sport- und Segelflug | Phoebus B1 | Airworthiness Directives; Entwicklungsgemeinschaft (Messerschmitt-Bolkow-Blohm GmbH) Model Phoebus A1 and B1 Gliders |
Unsafe Condition
Cracks in the rudder control cable lever weld could lead to loss of rudder control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the rudder control cable lever weld using a magnifying glass with at least five times magnification. Disconnect and remove the lever and related components as specified. Replace the lever if a crack is found with a serviceable part of P/N 15120-4236 or an FAA-approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 10 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 100 hours' time in service from the last inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Entwicklungsgemeinschaft (Messerschmitt-Bolkow-Blohm GmbH) Model Phoebus A1 and B1 gliders, serial numbers 702 thru 751.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Rudder Control
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_75-18-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-18-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Entwicklungsgemeinschaft (Messerschmitt-Bolkow-Blohm GmbH) Model Phoebus ...Show more Subject: Rudder Control Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/18/1975 Make: Entwicklungsgemeinschaft Sport- und Segelflug Model: Phoebus A1 | Phoebus B1 Product Type: Aircraft Product Subtype: Glider Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 75-18-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2318 AD NUMBER: 75-18-01 SUBJECT HEADING: Airworthiness Directives; Entwicklungsgemeinschaft (Messerschmitt-Bolkow-Blohm GmbH) Model Phoebus A1 and B1 Gliders ACTION: SUMMARY: DATES: Effective August 18, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-18-01 ENTWICKLUNGSGEMEINSCHAFT (MESSERSCHMITT-BOLKOW-BLOHM GmbH): Amendment 39-2318. Applies to Phoebus A1 and B1 gliders, serial numbers 702 thru 751, certificated in all categories. Compliance is required as indicated. To prevent loss of rudder control, accomplish the following: (a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 100 hours' time in service from the last inspection, inspect the rudder control cable lever as follows: (1) Remove headrest, luggage container, and seat. (2) Disconnect rudder control cables from cable lever. (3) Remove rudder control rod and rudder control cable lever (P/N 15120-4236). (4) Inspect rudder control cable lever weld for cracks using a magnifying glass with a magnification power of not less than five. (5) If a crack is found comply with paragraph (b) of this AD. (b) If a rudder control cable lever weld crack is found during an inspection required by paragraph (a), replace the rudder control cable lever P/N 15120-4236 with a serviceable part of the same part number or an FAA-approved equivalent. (MBB Service Bulletin No. PHOEBUS 27-20/1, dated March 1975, pertains to this AD.) This amendment becomes effective August 18, 1975. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_75-18-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-18-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Entwicklungsgemeinschaft (Messerschmitt-Bolkow-Blohm GmbH) Model Phoebus ...Show more Subject: Rudder Control Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/18/1975 Make: Entwicklungsgemeinschaft Sport- und Segelflug Model: Phoebus A1 | Phoebus B1 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: 75-18-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2318 AD NUMBER: 75-18-01 SUBJECT HEADING: Airworthiness Directives; Entwicklungsgemeinschaft (Messerschmitt-Bolkow-Blohm GmbH) Model Phoebus A1 and B1 Gliders ACTION: SUMMARY: DATES: Effective August 18, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-18-01 ENTWICKLUNGSGEMEINSCHAFT (MESSERSCHMITT-BOLKOW-BLOHM GmbH): Amendment 39-2318. Applies to Phoebus A1 and B1 gliders, serial numbers 702 thru 751, certificated in all categories. Compliance is required as indicated. To prevent loss of rudder control, accomplish the following: (a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 100 hours' time in service from the last inspection, inspect the rudder control cable lever as follows: (1) Remove headrest, luggage container, and seat. (2) Disconnect rudder control cables from cable lever. (3) Remove rudder control rod and rudder control cable lever (P/N 15120-4236). (4) Inspect rudder control cable lever weld for cracks using a magnifying glass with a magnification power of not less than five. (5) If a crack is found comply with paragraph (b) of this AD. (b) If a rudder control cable lever weld crack is found during an inspection required by paragraph (a), replace the rudder control cable lever P/N 15120-4236 with a serviceable part of the same part number or an FAA-approved equivalent. (MBB Service Bulletin No. PHOEBUS 27-20/1, dated March 1975, pertains to this AD.) This amendment becomes effective August 18, 1975. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
Related Airworthiness Directives
70-21-03
final ruleAirworthiness Directives; Entwicklungsgemeinschaft Model "PHOEBUS" A1, B1, and C Sailplanes
Unsafe Condition: The rudder may become blocked by the back-slipping chute coupling.