# AD 83-12-04: Flap Bellcrank Attach Mountings - Type: Airworthiness directive - Status: Current - Products: Vulcanair P 68, P 68 Observer, P 68B, P 68C and P 68C-TC - Effective: June 23, 1983 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-4666 - Registered aircraft: 41 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A83066261AD155A686256A4D0044D06B.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/83-12-04 ## The airworthiness directive 83-12-04 PARTENAVIA S.p.A.: Amendment 39-4666. Applies to Models P68, P68B, P68C, P68C-TC, and P68 Observer (Serial Numbers 1 through 277) airplanes certificated in any category. Compliance: Required as indicated, unless already accomplished. To prevent failure of the flap bellcrank attachment mounting brackets, accomplish the following: a) Within the next 100 hours time-in-service from the effective date of this AD, or upon the accumulation of 500 hours time-in-service, whichever occurs later, and thereafter at intervals not to exceed 100 hours time-in-service from the last inspection, visually inspect the flap bellcrank attachment mounting brackets (P/N 68-1.5035-1 and 68-1.5035-2) on both wings as described in Partenavia Service Bulletin (SB) No. 56, dated October 7, 1982 (herein referred to as the SB). Inspect for cracks in the area surrounding the pivot bolt hole by looking through the inspection door on the inboard side of the engine nacelles and by using a mirror to look at the upper bracket. b) If any cracks are found, prior to further flight stop drill the crack and install reinforcement kit (P/N 025) in accordance with Drawing R-0059 of the SB. c) Within the next 100 hours time-in-service from the effective date of this AD or upon accumulating 1,000 hours time-in-service whichever occurs later unless already accomplished per paragraph b) of this AD, install the reinforcement kit (P/N 025) in accordance with Drawing R-0059 of the SB. d) The repetitive inspections of paragraph a) of this AD are no longer required when the reinforcement kit (P/N 025) is installed. e) The intervals between the repetitive inspections required by this AD may be adjusted up to 10 percent of the specified interval to allow accomplishing these inspections concurrent with other scheduled maintenance of the airplane. f) Aircraft may be flown in accordance with Federal Aviation Regulation 21.197 to a location where this AD can be accomplished. g) An equivalent method 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, 1000 Brussels, Belgium. This amendment becomes effective on June 23, 1983. ## 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 5 of 10 models: P.68C-TC, P.68B, P.68 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: 41 (41 by airframe model, 0 by engine model) - Makers: Partenavia 36, Vulcanair 5 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) - [Partenavia P68](https://openairdocs.org/model/partenavia-p68): 1 aircraft (airframe model) All 6 models: https://openairdocs.org/ad/83-12-04/models.md Every aircraft: https://openairdocs.org/ad/83-12-04/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.