Hang Gliders require routine maintenance to meet the airworthiness standards to which they were developed and are sometimes subject to airworthiness advisories for inspection, configuration and maintenance. We strongly encourage all pilots of Wills Wing gliders to review all Technical Bulletins that are applicable to their equipment and check this page periodically for updates.
Use the Search: box to filter by any combination of TB number, title, category, or date. For example, searching "Falcon" shows all Falcon-related bulletins, and "Maint" shows all maintenance-related documents. Click any column header to sort.
| TB Number | Issue Date | Title | Category | |
|---|---|---|---|---|
| TB19900601 | 1990-06-01 | VG Lever Bracket Retrofit | VG | TB19900601.pdf |
| TB19930801 | 1993-08-01 | Downtube End Plug Damage | Control Bar | TB19930801.pdf |
| TB19930802 | 1993-08-02 | Cbar Plug / Side Wire Tang | Control Bar | TB19930802.pdf |
| TB19930803 | 1993-08-03 | Folding Basetube Parts/Price | Control Bar | TB19930803.pdf |
| TB19931101 | 1993-11-01 | Toe-In Downtube Plugs | Control Bar | TB19931101.pdf |
| TB19931102 | 1993-11-02 | Layflat Slider Revision | All | TB19931102.pdf |
| TB19940101 | 1994-01-01 | V-Cut VG Cleat Retrofit | VG | TB19940101.pdf |
| TB19940102 | 1994-01-02 | RamAir Kingpost Design Change | Ram Air | TB19940102.pdf |
| TB19940103 | 1994-01-03 | New VG Compensator Pulley | VG | TB19940103.pdf |
| TB19940201 | 1994-02-01 | Converting AT Round/Stream Legs | Control Bar | TB19940201.pdf |
| TB19940501 | 1994-05-01 | RamAir Pitch Stability Modification | Ram Air | TB19940501.pdf |
| TB19940801 | 1994-08-01 | RamAir Compensator Connection | Ram Air | TB19940801.pdf |
| TB19940802A | 1994-08-02 | Cable Maintenance | Maintenance | TB19940802A.pdf |
| TB19940803 | 1994-08-03 | Falcon Leading Edge Pins Conversion | Falcon | TB19940803.pdf |
| TB19941101 | 1994-11-01 | RamAir Leading Edge Pin Inspection | Ram Air | TB19941101.pdf |
| TB19941102 | 1994-11-02 | RamAir Leading Edge Sleeve Replace | Ram Air | TB19941102.pdf |
| TB19950601 | 1995-06-01 | Extending the Rear Keel Falcon 195 | Falcon | TB19950601.pdf |
| TB19950602 | 1995-06-02 | Falcon #1 Batten Stud Modification | Falcon | TB19950602.pdf |
| TB19950603 | 1995-06-03 | RamAir 14:1 VG Retrofit Kit | Ram Air | TB19950603.pdf |
| TB19950801 | 1995-08-01 | New Streamline Tubing | Control Bar | TB19950801.pdf |
| TB19970701 | 1997-07-01 | Parachute Swivel De-burring | Parachute | TB19970701.pdf |
| TB19970702 | 1997-07-02 | Reflex Bridle Adjustment and Maintenance | Maintenance | TB19970702.pdf |
| TB19970703 | 1997-07-03 | 62mm Crossbar Ball and Socket Fittings | All | TB19970703.pdf |
| TB19970704 | 1997-07-04 | Fusion Hang Loop Advisory | Fusion | TB19970704.pdf |
| TB19971110 | 1997-11-10 | Fusion Cam VG Wire Pad | Fusion | TB19971110.pdf |
| TB19980615B | 1998-06-15 | Fusion Sprog Inspection | Fusion | TB19980615B.pdf |
| TB19980616 | 1998-06-16 | Cover Ballistic Fusion Xbar Cntr Plates | Fusion | TB19980616.pdf |
| TB19980706 | 1998-07-06 | Fusion Owner's Manual Addendum | Fusion | TB19980706.pdf |
| TB19980707 | 1998-07-07 | Folding Basetubes Not Compatible w/ Wheel Brackets | Control Bar | TB19980707.pdf |
| TB19980709 | 1998-07-09 | Fusion Sprog Bracket Rivet Inspection | Fusion | TB19980709.pdf |
| TB19980715 | 1998-07-15 | Fusion Sprog Cable Tether Upgrade | Fusion | TB19980715.pdf |
| TB19980716 | 1998-07-16 | Inspection and Pre-flight of Locknut Assemblies | Maintenance | TB19980716.pdf |
| TB19980730 | 1998-07-30 | Keyhole Collar Recall and Replacement | All | TB19980730.pdf |
| TB19980810A | 1998-08-10 | Abnormal Glider Configurations | All | TB19980810A.pdf |
| TB20000310 | 2000-03-10 | Paraswivel Recall and Inspection | Parachute | TB20000310.pdf |
| TB20000719 | 2000-07-19 | Platform Towing Safety Advisory | All | TB20000719.pdf |
| TB20000901 | 2000-09-01 | Crossbar Ball and Socket Changes | Falcon | TB20000901.pdf |
| TB20000902 | 2000-09-02 | Falcon 195 and 225 Crossbar Material Changes | Falcon | TB20000902.pdf |
| TB20020601 | 2002-06-01 | Batten Tip Replacement Spring Tip Battens | All | TB20020601.pdf |
| TB20020602 | 2002-06-02 | AT Control Bar Elbow Design Changes | Control Bar | TB20020602.pdf |
| TB20020701 | 2002-07-01 | Keyhole bolts | All | TB20020701.pdf |
| TB20020702 | 2002-07-02 | Falcon Tandem with Finster Wheels | Tandem | TB20020702.pdf |
| TB20020703 | 2002-07-03 | Convert AT Round to Streamline Downtubes | Control Bar | TB20020703.pdf |
| TB20020801 | 2002-08-01 | Falcon Leading Edge to Crossbar Assembly | Falcon | TB20020801.pdf |
| TB20030101A | 2003-01-01 | Rear Leading Edge Replacement, Models with Curved Tips | All | TB20030101A.pdf |
| TB20030306 | 2003-03-06 | Streamlined Wheels Installation | Control Bar | TB20030306.pdf |
| TB20030909 | 2003-09-09 | Spring to Lever Batten Tip Conversion | All | TB20030909.pdf |
| TB20030910 | 2003-09-10 | Falcon Sail Mount Webbing | Falcon | TB20030910.pdf |
| TB20030922 | 2003-09-22 | Lever Batten Tip Procedures | All | TB20030922.pdf |
| TB20031021 | 2003-10-21 | Retrofit Stabilizer Installation | All | TB20031021.pdf |
| TB20031029 | 2003-10-29 | Falcon Tandem with Hydranet Trailing Edge | Falcon Tandem | TB20031029.pdf |
| TB20040205 | 2004-02-05 | Talon Annual Super-Preflight | Talon | TB20040205.pdf |
| TB20040424A | 2004-04-24 | Tips Wands Installation and Warranty | All | TB20040424A.pdf |
| TB20050503 | 2005-05-03 | Rotor Kick-Ass Harness Slider Replacement | Harness | TB20050503.pdf |
| TB20050620A | 2005-06-20 | Crossbar Ball Center Rope Maintenance | Maintenance | TB20050620A.pdf |
| TB20050621 | 2005-06-21 | Crossbar Center Hinge Pin | Maintenance | TB20050621.pdf |
| TB20050705 | 2005-07-05 | T2 Sweep Wire Button Lock Warning Label | T2 | TB20050705.pdf |
| TB20050912 | 2005-09-12 | Slipstream Control Bar Leg Top Fittings | Control Bar | TB20050912.pdf |
| TB20060320 | 2006-03-20 | Free Flight Parachute Packing Inspection | Parachute | TB20060320.pdf |
| TB20061019 | 2006-10-19 | T2 Hang Loop Spreader Bar Replacement | T2 | TB20061019.pdf |
| TB20080924 | 2008-09-24 | Assembly, Maintenance and Inspection of Locknuts | Maintenance | TB20080924.pdf |
| TB20100625 | 2010-06-25 | Inspection, Correct Assembly of T2/T2C Rear Sled Bolts | T2, T2C | TB20100625.pdf |
| TB20110822 | 2011-08-22 | Bottom Side Wire Installation - Litestream/Slipstream | Control Bar | TB20110822.pdf |
| TB20110825R | 2011-08-25 | Hang Loop Inspection - Recall - Kingpost Hang Models | U2, Sport 2 | TB20110825R.pdf |
| TB20121017 | 2012-10-17 | Elbows and Plugs - Round Control Bars | Falcon | TB20121017.pdf |
| TB20141110 | 2014-11-10 | Z5 Rigging with Amsteel Grey 1/8 inch Rope | Harness, Z5 | TB20141110.pdf |
| TB20161003 | 2016-10-03 | Sweep Wire - Nico Stops | Sport 2, U2 | TB20161003.pdf |
| TB20170502 | 2017-05-02 | Talon - Slipstream to Slipstream2 or Litestream Downtubes | Talon | TB20170502.pdf |
| TB20180726 | 2018-07-26 | Sport 3 Rear Leading Edge Adjustment | Sport 3 | TB20180726.pdf |
| TB20201111 | 2020-11-11 | Sprog Bracket Bolts and Rivet Inspection | All | TB20201111.pdf |
| ACLER instructions | Supplementary | ACLER_instructions.pdf | ||
| Carbon Stinger Installation | Supplementary | Carbon_Stinger_Installation.pdf |