British Gliding Association - Technical News Sheet TNS 5-2006 Issue 5-2006 Date: 06/11/2006 Airworthiness Information 1. Binder ASH 25 EB 28 AD 2006-0218E (Mandatory) Flight envelope limitations http://ad.easa.europa.eu/blob/easa_ad_2006_0218_E.pdf/EAD_2006-0218-E_1 2. Piper PA25 series AD RA 2006-06-01, SB 25/53/03 (Mandatory) Argentinean AD Classified as mandatory by EASA Inspection of tail plane mounting tubes for corrosion and cracks AD not included in BGA Listing. http://www.easa.eu.int/doc/Certification/Airwor_Directives/AD_Foreign/RA%202006-06- 01.pdf 3. Rolladen-Schneider LS4b Reported by John Hull of Wyvern Gliding Club Undercarriage collapse due to failed rod end in folding mechanism. (Information) 4. Schempp-Hirth Duo Discus AD 2006-0294-E, TN 890-8 (Mandatory) Propeller Hub – Inspection and overhaul http://ad.easa.europa.eu/blob/easa_ad_2006_0294_E.pdf/EAD_2006-0294-E_1 5. Schempp-Hirth Nimbus 4DT AD 2006-0294-E, TN 868-11 (Mandatory) Propeller Hub – Inspection and overhaul http://ad.easa.europa.eu/blob/easa_ad_2006_0294_E.pdf/EAD_2006-0294-E_1 6. Slingsby T21 (Information) Notification from Technical Committee For C of G release hook installation approved under BGA Modification BGA 2005/03 a BLUE weak link is approved (600 daN = 1320 lbs) 7. Schleicher ASK21 (Information) Reported by Jim Heath, Southdown Gliding Club Two aircraft with rear canopy support arms cracked. Cracks occur at the cross drilled weak points for canopy jettison. Repair is by replacement. Do not reinforce drilled area as it is designed to break in the event of canopy jettison. The use of 5/8OD thin wall 4130 tube proved a perfect internal sleeve for joining new replacement partial frame. Super glue in position on aircraft and then remove for welding. 8. Stemme S10, S10-V, S10-VT AD 2006-0310-E, SB A31-10-077 (Mandatory) Engine fuel connector inspection and replacement http://ad.easa.europa.eu/blob/easa_ad_2006_0310_E.pdf/EAD_2006-0310-E_1 1 TNS 5-2006 9. Stemme S10-VT AD 2006-0311-E, SB A31-10-076 (Mandatory) Engine coolant replacement http://ad.easa.europa.eu/blob/easa_ad_2006_0311_E[Corrected].pdf/EAD_2006-0311- E-Corrected_1 10. SZD 50-3 Puchacz BGA Letter to operators (Advisory) Problems with previous rudder hinge bearing pin SB interpretation. ALL pins are drilled during manufacture. Difficulty in finding drilled split pin holes as filled with hard material. http://www.gliding.co.uk/bgainfo/technical/documents/Puchacz-owners-021006.pdf 11. SZD 50-3 Puchacz AD 2006-0317, SB-057/SZD-50-3/2006 “PUCHACZ” (Mandatory) Modification to rudder control cable at rear rudder pedal. (Gliders previously embodied BGA Mod 204/13 are considered to be in compliance for part 4.2 of SB). http://ad.easa.europa.eu/blob/easa_ad_2006_0317.pdf/AD_2006-0317_1 ENGINES 12. ECI Cylinders assemblies FAA 2006-12-07 (Mandatory) ECI Classic Cast Cylinders fitted to Lycoming 320, 360 & 540 series engines. Certain serial number, 800 hour TBO and prohibition order. AD not included in BGA Listing http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/f488f278dd3b2 1ed8625718b00578276/$FILE/SM2006-12.pdf 13. Lycoming Engines FAA 2006-20-09 (Mandatory) Applies to all engines with crankshafts fitted after 1 March 1997 AD not included in BGA Listing http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/4db3179d1c66 2b77862571fb005d51f0/$FILE/SM2006-20.pdf 14. Rotax 275, 501, 505, 535. SB 505-010, SB 535-009 (Mandatory) To address the exclusion of Rotax engines from GR24, a new “On Condition” maintenance schedule has been approved for Rotax 2 stroke engines. ALL applicable Rotax engines must now comply with the new schedule even if you were previously within the recommended TBO. The new schedule applies to ALL BGA aircraft with applicable engines Note: this involves simple maintenance checks at each 5 hours operation and other specified intervals. http://www.rotax-aircraft-engines.com/pdf/dokus/d03857.pdf 15. Rotax 912A, F & S AD 2006-0316-E, SB 912-051 (Mandatory) Inspection of magnetic plug, within 5 hours and each oil change http://ad.easa.europa.eu/blob/easa_ad_2006_0316_E.pdf/EAD_2006-0316-E_1 16. Rotax 914F AD 2006-0316-E, SB 914-034 (Mandatory) Inspection of magnetic plug, within 5 hours and each oil change http://ad.easa.europa.eu/blob/easa_ad_2006_0316_E.pdf/EAD_2006-0316-E_1 2 TNS 5-2006 EQUIPMENT 17. Electrical rocker switches Carling Technologies Inc. AD 2006-0274 (Mandatory) Inspection of electrical switches http://ad.easa.europa.eu/blob/easa_ad_2006_0274.pdf/AD_2006-0274_2 18. Parachutes Parachutes de France Techno 240 AD 2006-0160-E (Mandatory) Reserve parachute – Mandatory packing, modifications, slider and steering lines replacement http://ad.easa.europa.eu/blob/easa_ad_2006_0160_E.pdf/EAD_2006-0160-E_1 19. Parachutes PARACHUTE SHOP AD 2006-0279 (Mandatory) Certain parachutes removed from service if manufactured after 1 Jan 2001. http://ad.easa.europa.eu/blob/easa_ad_2006_0279.pdf/AD_2006-0279_2 Modifications 1. Instruments We are continually being asked about instrument fits in new gliders. To clarify the current situation; The “required instruments” as in CS 22.1303, (ASI and Altimeter for a simple glider, no aerobatics and no water) must be released on all post 9/2003 aircraft. This applies to both cockpits for tandem gliders. Other “Soaring” equipment (Varios, Loggers, GPS etc) need not be released. All equipment will eventually be required to be installed under an approved modification, both released and non released items. If the instruments are fitted by the factory or prior to import and are included in the EASA form 52 Statement of Conformity and equipment list, or prior to the domestic or Export C of A being issued for used aircraft, the mod is deemed to be approved. If the panel or part panel is fitted after import and after the transfer documents have been issued then that part or whole will require mod approval before the aircraft is issued with an EASA C of A - sometime starting in 2007. The BGA is currently looking at ways we may be able to assist owners in getting their mods approved. We do not have firm details at this time, however there will be some cost element to owners for mod approval. 3 General Information TNS 5-2006 1. Re-use of stiff nuts If re-using stiff nuts - Nylon Insert, K-lock, or any other type, the friction torque MUST be checked when refitting the nut to ensure it has not reduced to an extent where the nuts are no longer safe to use. It is recommended that stiff nuts, especially Nylon insert, are replaced every time but it is recognised that more expensive nuts may be reused, but only if serviceable. 2. Substitution of Castellated nuts and split pins with stiff nuts A BGA standing instruction allows for the use of stiff nuts in place of castellated nuts and split pins where the nut can be done up tightly. This instruction is not to be used on any assembly where there is any movement of the component parts, any joint that cannot be done up tightly or where a castellated nut and split (cotter) pin is specified by the manufacturer in the maintenance manual or by Airworthiness Directive or service bulletin (TN, TB, TI, etc.). 3. Rigging and Control Checks We continue to receive reports that gliders are not being rigged and control checks carried out during, or on completion of, Annual maintenance. It is a BGA Mandatory requirement that every glider is rigged and the control deflections are checked and recorded at each Annual C of A inspection. See BGA GMS task 54. The results should be compared with previous records and MM limits to assess any changes. 4. Foreign Airworthiness Directives AD’s such as the PA25 AD (item 2) are published by EASA but not in the main AD section. Go to EASA home page http://www.easa.eu.int/home/ and on the left menu select “Certification” on the drop down menu, select “Airworthiness Directives” scroll down and there links to the various sections. Unfortunately, the AD listings are not particularly clear and careful scrutiny is required to research. 5. CAA Airworthiness Notices (CAP 455) Complimentary copies of Airworthiness Notices have been discontinued. Now only available as free download from the CAA web site or purchase from TSO. http://www.caa.co.uk/docs/33/CAP455.PDF & http://www.tso.co.uk/ Compliance Statement: All mandatory inspections and modifications have been included up to the following: CAA CAP 455 Airworthiness Notices, Contents issue: 139 CAA CAP 747 Mandatory Requirements for Aircraft, issue: 2 amendment: 10/2006 State of Design Airworthiness Directives review date: 6 November 2006 For reference: FAA Summary of Airworthiness Directives. Bi-weekly listing 2006-22 EASA Airworthiness Directives review date: 6 November 2006 CAA CAP 474 Foreign Airworthiness Directives issue: 372 CAA CAP 476 Mandatory Aircraft Modifications and Inspections Summary issue: 287 CAA CAP 661 Mandatory Permit Directives, issue 2006/2 Jim Hammerton Chief Technical Officer 4