Worm Gear
0 failure reports named the worm gear in the last ten years, 11 since 1995. 15 FAA approvals let 5 companies make a replacement worm gear, Hartzell Engine Technologies LLC holding the most (10).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 1 |
| 1996 | 1 |
| 2001 | 4 |
| 2003 | 2 |
| 2004 | 1 |
| 2008 | 1 |
| 2013 | 1 |
Approved replacement parts 15 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a worm gear and sell it as an approved part for the models named. These are the companies holding such approvals for a worm gear:
For these models most: Sikorsky S-61 (2), Sikorsky S-64 (1), Dehavilland DHC-6 (1), Bombardier CL-600 Challenger and CRJ (1), Beechcraft V35 Bonanza (1), Beechcraft T-34 (1), Beechcraft G58 (1), Beechcraft G36 Bonanza (1), Beechcraft G33 (1), Beechcraft F33 Bonanza (1), Beechcraft E-55 (1), Beechcraft D55 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Hartzell Engine Technologies LLC | Worm Gear, Starter 55195-2 | 653717M015 | Continental... IO-470-C10B, IO-470-C11B, IO-470-C12B | 2025-09-18 | current |
| Hartzell Engine Technologies LLC | Worm Gear, Starter, L.H. 55199-2 | 653721M015 | Continental... LTSIO-520-AE1A, LTSIO-520-AE1B,... | 2025-09-18 | current |
| Hartzell Engine Technologies LLC | Worm Gear, Starter, R.H. 55198-2 | 653720M015 | Continental... TSIO-520-AE1B, TSIO-520-AE2B, TSIO-520-AE3B | 2025-09-18 | current |
| Hartzell Engine Technologies LLC | Worm Gear, Starter 55031 | 539805 | Continental... IO-520-B6B, IO-520-BA10B, IO-520-BA11B | 2025-09-18 | current |
| Hartzell Engine Technologies LLC | Worm Gear, Starter, R.H. 55198 | 653720 | Continental... TSIO-520-AE1B, TSIO-520-AE2B, TSIO-520-AE3B | 2025-09-18 | current |
| Hartzell Engine Technologies LLC | Worm Gear, Starter 55030 | 539793 | Continental... LTSIO-360-E1B, LTSIO-360-E2B, LTSIO-360-E3B | 2025-09-18 | current |
| Hartzell Engine Technologies LLC | Worm Gear, Starter 55164-2 | 652388M015 | Continental... IO-520-B6B, IO-520-BA10B, IO-520-BA11B | 2025-09-18 | current |
| Hartzell Engine Technologies LLC | Worm Gear, Starter 55164 | 652388 | Continental... IO-520-B6B, IO-520-BA10B, IO-520-BA11B | 2025-09-18 | current |
| Hartzell Engine Technologies LLC | Worm Gear, Starter 55195 | 653717 | Continental... IO-470-C10B, IO-470-C11B, IO-470-C12B | 2025-09-18 | current |
| Hartzell Engine Technologies LLC | Worm Gear, Starter, L.H. 55199 | 653721 | Continental... LTSIO-520-AE1A, LTSIO-520-AE1B,... | 2025-09-18 | current |
| Aerospace Turbine Rotables | Worm Gear TR-35-810076-3 | Beechcraft 35-810076-3 | Beechcraft F33, G33, F33A | 2016-09-07 | current |
| Pma Design & Manufacturing | Worm Gear PDMW21118 | W21118 (Rosemount) | Dehavilland DHC-6-100, 200, 300 series | 2008-08-12 | current |
| Jet Parts Engineering INC | Worm Gear 3233480JP-2 | Honeywell P/N 3233480-2 | Bombardier, Inc. CL-600-2B19 series | 2006-03-14 | current |
| Rotair Industries INC | Worm Gear R6132-61015-1 | Sikorsky S6132-61015-1 | Sikorsky S61A, D, S61R | 1999-02-16 | current |
| Rotair Industries INC | Worm Gear R6130-62036-1 | Sikorsky S6130-62036-1 | Sikorsky S-61L, N, NM | 1994-05-24 | current |
Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.