Alternate Air
No failure report names the alternate air. 6 FAA approvals let 4 companies make a replacement alternate air, Ram Aircraft Limited Partnership holding the most (3).
Approved replacement parts 6 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a alternate air and sell it as an approved part for the models named. These are the companies holding such approvals for a alternate air:
For these models most: Cessna 340 (3), Piper PA-19 (1), Piper PA-18 Super Cub (1), Cessna T210 Turbo Centurion (1), Cessna 210 Centurion (1), Beechcraft D-45 (1), Beechcraft B-45 (1), Beechcraft A45 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Ho Aircraft INC | Alternate Air Box - Automatic AAB-2 | Modification Part | Piper Aircraft, Inc. PA-18, PA-18S, PA-18105 Special | 2014-03-03 | current |
| Aviation Products Systems INC | Alternate Air Door Assy APS-5535 | Modification Part | Hawker Beechcraft 45 (YT-34), A45 (T-34A, B-45) | 2010-03-01 | current |
| Ram Aircraft Limited Partnership | Alternate Air Cable 1622-1, 1622-2, 1622-6, 1622-7 | Cessna P/N 9910271-11, 9910271-10, 9910271-21,... | The Cessna Aircraft Company 340, 340A, and 414 | 2010-01-31 | current |
| Ram Aircraft Limited Partnership | Alternate Air Cable 1622-1, 1622-2, 1622-6, 1622-7 | Cessna P/N 9910271-11, 9910271-10, 9910271-21,... | Cessna 340, 340A, and 414 | 2008-12-01 | current |
| Ram Aircraft Limited Partnership | Alternate Air Cable 1622-1, 1622-2, 1622-6, 1622-7 | Cessna Alternate Air Cable, 9910271-11... | Cessna 340, 340A, and 414 | 1999-10-17 | current |
| Aero Modifications & Consulting LLC | Alternate Air Box Assembly 21095011 | Cessna 1250735-1 | Cessna 210, T210 | 1996-03-24 | 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.