# Viking Air Temporary Revision 241: No revision named - Rights: © Viking Air. Filed by the FAA in regulations.gov docket FAA-2022-0007, the docket of AD 2022-07-14. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Viking Air Temporary Revision 241](https://openairdocs.org/service-documents/viking/tr-241.md) - Title as filed: Special Insp 3 Viking TR 241 from Viking DHC-6 PSM 1-6-7 - Pages: 4 - PDF: https://openairdocs.org/files/sha256/d8/0d/d80d0b628159ca3cbb6e12b7b1ac35fcd6f4c5dc63e77bc68add09435dac2dca - Page: https://openairdocs.org/service-documents/viking/tr-241/file/d80d0b628159 ## Text Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 PSM 1–6–7 TC APPROVED – Temporary Revision PSM NO.: 1–6–7 AIRCRAFT: DHC-6 SERIES: ALL PUBLICATION: Inspection Requirements Manual TEMPORARY REVISION NO.: 241 ______________________________________________________________________ RECORDING INSTRUCTIONS: Record this Temporary Revision No. and the relevant information in the appropriate columns of the TEMPORARY REVISION INDEX provided at the front of the manual. Special Inspection 3 (TR 241) Page 1 of 4 Jul. 27/21 Insert in Part 2, Special Inspection - 3, after Page 12 SPECIAL INSPECTION 3 REASON FOR ISSUE: To update Fuel Gallery inspection tasks to include all float operation configurations. ACTION: In Special Inspection 3, D. Float Operations, ignore existing Pages 12 and 13, and insert revised pages, as shown on Pages 2 to 4 of this Temporary Revision. — Continued overleaf — ### Page 2 Temporary Revision No. 241 (Cont’d) Special Inspection 3 (TR 241) Page 2 of 4 Jul. 27/21 ITEM INSPECTION REQUIREMENTS INSPECTION INTERVAL SP3 OPERATIONAL CONDITIONS D. FLOAT OPERATIONS 7. Main Leg 7. a . Main Leg - Attachments to Floats Corrosion, evidence of movement and security . Every 100 hours. 7 .b. Main Leg - Fittings and Lugs Condition, cracks and security; slide fairing lugs back to accomplish this inspection. Every 300 hours. 8. All Attachm ent Fittings, Lugs and Brackets Condition, cracks, corrosion and security . Remove float attachment bolts in turn and check bolts for wear, scoring and ovality . Every 600 ho urs. 9. Float Sto wed Equipment and Stow age Equipment Condition and security . Every 300 hours. 10. Floor Understructure Spot check for corrosion by removing a floor panel and inspecting understructure, especially channel sections. Every 600 hours. 11 . Feel Spring Bungee for fraying, deterioration and security of end hooks. Attachment brackets and clamps for cracks and security . Clamp on elevator cable for evidence of movement. Every 50 hours. 12. Stabilizer Finlets Condition and security . Every 600 hours. 13. Nose Wheel Well Remove wheel well cover; inspect well for evidence of corrosion; stowed nose wheel steering cables for evidence of corrosion and security in stowed position. Replace wheel well cover. Every 300 hours. 14. Elevator and Rudder Control Cables Condition, corrosion, fraying. Note Stainless Steel Control Cables are approved for use on float aircraft in lieu of Carbon Steel Cables. Refer to PSM 1-6-2 (DHC-6 Series 100/200 Maintenance Manual), PSM 1-63-2 (DHC-6 Series 300 Maintenance Manual) and PSM 1-64-2 (DHC-6 Series 400 Maintenance Manual) and Technical Advisory Bulletin (TAB) 678/3 for cable specification. Every 400 hours or 3 months, whichever is less. Note Inspection interval may be reduced if required. 14.a. Elevator and Rudder Control Cables Replace Primary Rudder and Elevator flight control cables. Every 12 months. 15.(1) Fuel Gallery Remove all fuel gallery covers and rinse entire fuel gallery with fresh water. Daily. ### Page 3 Special Inspection 3 (TR 241) Page 3 of 4 Jul. 27/21 Temporary Revision No. 241 (Cont’d) ITEM INSPECTION REQUIREMENTS INSPECTION INTERVAL SP3 OPERATIONAL CONDITIONS D. FLOAT OPERATIONS 15.(2) Fuel Gallery Inspect entire fuel gallery for corrosion. Remov e corrosion as require d and reapply any protective finishes as required. Remo ve and replace any damaged components. For Mod 6/2390 or Mod 6/2395, visually inspect environmental wrap for condition, integrity (split, tear or removal etc.), corrosion, external wiring, connections and terminations for deterioration. Note Any degradation in the environmental wrap, remove wrap and do a detailed visual inspection of electrical wiring, connections and terminations for condition and corrosion. Replace damaged components. Install new environmental wrap and sealant (refer to PSM 1-64-2, Chapter 20-50-03). Every 125 hours. 15.(3) Fuel Gallery (Mod 6/2408) Inspect access panels and seals for damage. Repair or replace as required. Every 125 hours. 15.a.(1) Fuel Gallery - Boost Pump, EMI Filter and Pressure Switch Inspect electrical connections for evidence of corrosion or sealant deterioration. Remove corrosion and reapply protective coatings as required. Note EMI filter removed if Mod 6/2267 incorporated. Daily for one week after initial Mod incorporation, weekly thereafter. 15.a.(2) Fuel Gallery - Boost Pump, EMI Filter and Pressure Switch Remove sealant from electrical connections and surrounding area. Clean per PSM 1-64-2, 12-20-05. Reapply sealant per PSM 1-64-2, 20-50-01. (if applicable) Every 1000 hours. ### Page 4 Temporary Revision No. 241 (Cont’d) Special Inspection 3 (TR 241) Page 4 of 4 Jul. 27/21 THIS PAGE INTENTIONALLY LEFT BLANK --- 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, except the copies of manufacturers’ service documents, which belong to their rights holders.