Parts · Engine

Seal Seat

3 failure reports named the seal seat in the last ten years, 37 since 1995, most often on the Boeing 737; the condition most often found was "cracked". 1 FAA approvals let 1 company make a replacement seal seat, Triumph Engineering Services INC holding the most (1).

Reports by year

Reports by year, as a table

	reports
1995	1
1998	4
2003	1
2012	7
2013	14
2014	7
2022	1
2025	1
2026	1

Which system the reports file it under last ten years

Engine1Fuel system1Airframe structure1

Reports by system, as a table

	reports
Engine	1
Fuel system	1
Airframe structure	1

Models most often reporting it last ten years

Boeing 7372Boeing 7571

Models most reported, as a table

	reports
Boeing 737	2
Boeing 757	1

How it failed the condition found, last ten years

cracked1damaged1leaking1

Conditions found, as a table

	reports
cracked	1
damaged	1
leaking	1

Approved replacement parts 1 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a seal seat and sell it as an approved part for the models named. These are the companies holding such approvals for a seal seat:

Triumph Engineering Services INC 1

Maker	Part	Replaces	Fits	Granted	Status
Triumph Engineering Services INC	Seal Seat TG4950416	4950416	McDonnell Douglas 717-200 with Auxiliary Power...	2003-02-03	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.