# AD 83-07-51 R1: Flap Vane Support Assembly - Type: Airworthiness directive - Status: Current - Products: Bombardier CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), CL-600-2B16 (CL-601-3A) and CL-600-2B16 (CL-601-3R) - Effective: June 5, 1984 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-4874 - Registered aircraft: 598 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A3AC4DA1A99E7162862569EA006B8DC5.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/83-07-51-R1 ## The airworthiness directive 83-07-51 R1 CANADAIR: Amendment 39-4874. Applies to Model CL-600-1A11 (CL-600) and CL-600-2A12 (CL-601) airplanes certificated in all categories. Compliance is required as indicated on all airplanes with 150 hours or more total time in service. To prevent failure of the flap vane support assembly, P/N 600-14250-14, accomplish the following, unless previously accomplished: A. Prior to further flight, except for a flaps up ferry flight, remove the six (three per side) inboard flap vane support beam assemblies, P/N 600-14250-14, and perform a dye penetrant inspection of the beam assemblies in accordance with Canadair Alert Service Bulletin A600-0357, Revision 1, dated June 17, 1983 (CL-600); or A601-0010, Revision 1, dated June 17, 1983 (CL-601). If no cracks are found, repeat the inspection at intervals not to exceed 50 hours time in service. B. If cracks are found in one beam assembly, replace all six assemblies with new parts of the same part number prior to further flight. Reinspect as noted in paragraph A., above, after the accumulation of 150 additional hours time in service. C. If no cracks are found in any beam assembly, insert a NOTE in the "Flaps Extended Speed" paragraph of the Limitations Section of the Airplane Flight Manual to read: "Maximum Speed with Flaps 45 degrees, 160 KIAS." D. Post a placard on the left and right hand instrument panels to read: "Maximum Speed with Flaps 45 degrees, 160 KIAS." E. The repetitive inspections required by this AD and the flight manual/flap placard speed restrictions given in paragraphs C. and D., above, may be terminated upon installation of modified beam and trunnion assemblies in accordance with Parts C and D of the Service Bulletin. F. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, New York Aircraft Certification Office, FAA, New England Region. G. Special flight permits may be issued in accordance with FAR21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. This amendment becomes effective June 5, 1984, and was effective earlier to all recipients of Telegraphic AD T83-07-51 dated April 6, 1983. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A21EA](https://openairdocs.org/tcds/A21EA): Bombardier Inc.; names 3 of 5 models: CL-600-1A11 (600), CL-600-2A12 (601), CL-600-2B16 (604 Variant) ## 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: 598 (598 by airframe model, 0 by engine model) - Makers: Bombardier 432, Canadair 164, Bombardier Aerospace 1, Canadair Bombardier 1 Models with the most aircraft: - [Bombardier CL-600-2B16](https://openairdocs.org/model/bombardier-cl-600-2b16): 388 aircraft (airframe model) - [Canadair CL-600-2B16](https://openairdocs.org/model/canadair-cl-600-2b16): 134 aircraft (airframe model) - [Bombardier CL-600-2B16(CL-604)](https://openairdocs.org/model/bombardier-cl-600-2b16-cl-604): 42 aircraft (airframe model) - [Canadair CL-600-2A12](https://openairdocs.org/model/canadair-cl-600-2a12): 19 aircraft (airframe model) - [Canadair CL-600-1A11](https://openairdocs.org/model/canadair-cl-600-1a11): 5 aircraft (airframe model) - [Canadair CL600-2B16(CL601-3A)](https://openairdocs.org/model/canadair-cl600-2b16-cl601-3a): 3 aircraft (airframe model) - [Canadair CL600-1A11](https://openairdocs.org/model/canadair-cl600-1a11): 2 aircraft (airframe model) - [Bombardier CL-600-2A12](https://openairdocs.org/model/bombardier-cl-600-2a12): 1 aircraft (airframe model) - [Bombardier CL600-2B16 (CL601-3A](https://openairdocs.org/model/bombardier-cl600-2b16-cl601-3a): 1 aircraft (airframe model) - [Bombardier Aerospace CL-600-2B16 (CL-604)](https://openairdocs.org/model/bombardier-aerospace-cl-600-2b16-cl-604): 1 aircraft (airframe model) - [Canadair Bombardier CL-600-2B16](https://openairdocs.org/model/canadair-bombardier-cl-600-2b16): 1 aircraft (airframe model) - [Canadair CL-600-2A12(CL-601)](https://openairdocs.org/model/canadair-cl-600-2a12-cl-601): 1 aircraft (airframe model) All 12 models: https://openairdocs.org/ad/83-07-51-R1/models.md Every aircraft: https://openairdocs.org/ad/83-07-51-R1/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.