# AD 87-04-20: Aileron Control Cable - Type: Airworthiness directive - Status: Current - Products: Vulcanair P 68, P 68 Observer, P 68B, P 68C, P 68C-TC and P68TC Observer - Effective: March 16, 1987 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-5547 - Registered aircraft: 44 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5DCDA76BD4241D7186256A4D0044F219.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/87-04-20 ## The airworthiness directive 87-04-20 PARTENAVIA: Amendment 39-5547. Applies to certain Partenavia Models P-68, P-68B, P-68C, P-68C-TC, P68 "OBSERVER" and P68TC "OBSERVER" (Serial Numbers (S/N) 1 to 340 inclusive) airplanes equipped with photogrammetric hatch, certificated in any category. Compliance: Required within 50 hours time-in-service (TIS) after the effective date of this AD, unless already accomplished. To preclude possible loss of braking and/or loss of aileron control, accomplish the following: (a) For airplanes with Serial Numbers (S/N) 1 to 298 inclusive, visually inspect the aileron control cable to the right side of the photogrammetric hatch for interference with the brake oil line in accordance with steps 1 through 6 of Part 1A, "INSPECTION INSTRUCTIONS" of Partenavia Service Bulletin (S/B) No. 68 dated January 31, 1986 (referred to hereafter as S/B NO. 68). (1) If no discrepancy is found, return the airplane to service. (2) If a discrepancy is found, prior to furtherflight, accomplish the following: (i) Replace damaged oil tube. Carefully inspect and, if necessary, replace the aileron control cable. (ii) To prevent further interference between the brake oil lines and the aileron control cable, install a clamp (MS 21919-DG9) as shown in figure 2 on page 3/3 of S/B No. 68. (iii) Visually check that the clamp is properly installed and the interference is no longer present. (iv) Return the airplane to service. (b) For airplanes with S/N 299 to 340 inclusive: (1) Remove carpeting from around the photogrammetric hatch. (2) Cut a rectangular inspection hole 3.35 inches by 2.35 inches (85 x 60mm) in accordance with figures 1 and 2 on page 3/3 of S/B No. 68. (3) Manufacture a rectangular cover plate for the above inspection hole in accordance with figure 2 on page 3/3 of S/B No. 68. (4) Visually inspect the aileron cable to the right of the photogrammetric hatch for interference with the brake oilline in accordance with steps 3 through 6 of Part 1A, "INSPECTION INSTRUCTIONS" of S/B No. 68. (i) If no discrepancy is found, return the airplane to service. (ii) If a discrepancy is found, prior to further flight, accomplish paragraph (a)(2) of this AD. (c) For all aircraft having clamp (P/N MS 21919-DG9) installed on the brake oil line in accordance with Part II, "Repair Instructions" of Partenavia S/B No. 68 dated January 31, 1986, no further action is necessary. (d) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (e) An equivalent means of compliance with this AD may be used if 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 document referred to herein upon request to Partenavia Costruzioni Aeronautiche S.p.A., Via Cava, 80026 Casoria (Naples), Italy; or FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment becomes effective on March 16, 1987. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A31EU](https://openairdocs.org/tcds/A31EU): Vulcanair S.p.A.; names 6 of 10 models: P.68C-TC, P.68B, P.68 Observer, P.68TC Observer, P.68, P.68C ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 44 (44 by airframe model, 0 by engine model) - Makers: Partenavia 37, Vulcanair 7 Models with the most aircraft: - [Partenavia P.68C](https://openairdocs.org/model/partenavia-p-68c): 20 aircraft (airframe model) - [Partenavia P 68 OBSERVER](https://openairdocs.org/model/partenavia-p-68-observer): 5 aircraft (airframe model) - [Partenavia P68B](https://openairdocs.org/model/partenavia-p68b): 5 aircraft (airframe model) - [Partenavia P 68 C/TC](https://openairdocs.org/model/partenavia-p-68-c-tc): 5 aircraft (airframe model) - [Vulcanair P68C](https://openairdocs.org/model/vulcanair-p68c): 5 aircraft (airframe model) - [Vulcanair P68 TC OBSERVER](https://openairdocs.org/model/vulcanair-p68-tc-observer): 2 aircraft (airframe model) - [Partenavia P68](https://openairdocs.org/model/partenavia-p68): 1 aircraft (airframe model) - [Partenavia P68-TC OBSERVER](https://openairdocs.org/model/partenavia-p68-tc-observer): 1 aircraft (airframe model) All 8 models: https://openairdocs.org/ad/87-04-20/models.md Every aircraft: https://openairdocs.org/ad/87-04-20/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.