Block Sealing
No failure report names the block sealing. 7 FAA approvals let 2 companies make a replacement block sealing, Seal Dynamics INC holding the most (4).
Approved replacement parts 7 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a block sealing and sell it as an approved part for the models named. These are the companies holding such approvals for a block sealing:
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Seal Dynamics INC | Block-Sealing, Cylindrical C-Duct Support Strut Assy,... LK88122QAS | Rolls Royce P/N LK88122 | Rolls Royce RB211-535E4-37, RB211-535E4-B-37,... | 2014-10-09 | current |
| Seal Dynamics INC | Block-Sealing, Cylindrical C-Duct Support Strut Assy,... LK88121QAS | Rolls Royce P/N LK88121 | Rolls Royce RB211-535E4-37, RB211-535E4-B-37,... | 2014-10-09 | current |
| Seal Dynamics INC | Block-Sealing, Inner Duct Assy, Common Nozzle Assy LK88050QAS | Rolls Royce P/N LK88050 | Rolls Royce RB211-535E4-37, RB211-535E4-B-37,... | 2014-10-09 | current |
| Seal Dynamics INC | Block-Sealing, Inner Duct Assy, Common Nozzle Assy LK88049QAS | Rolls Royce P/N LK88049 | Rolls Royce RB211-535E4-37, RB211-535E4-B-37,... | 2014-10-09 | current |
| Quest Aviation Supply INC | Block-Sealing, Cylindrical C-Duct Support Strut Assy,... LK88121QAS | LK88121 | Rolls Royce RB211-535E4-37, RB211-535E4-B-37,... | 2012-03-01 | current |
| Quest Aviation Supply INC | Block-Sealing, Inner Duct Assy, Common Nozzle Assy LK88050QAS | LK88050 | Rolls Royce RB211-535E4-37, RB211-535E4-B-37,... | 2012-03-01 | current |
| Quest Aviation Supply INC | Block-Sealing, Cylindrical C-Duct Support Strut Assy,... LK88122QAS | LK88122 | Rolls Royce RB211-535E4-37, RB211-535E4-B-37,... | 2012-03-01 | 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.