SE00025EN
Installation of International Aerospace Tubes, LLC, Master Drawing List TPC Stage 7 Cooling System , revision NR, dated December 15, 2011, or later FAA-Approved Revisions. Held by United Technologies Corporation, Pratt & Whitney Division, which holds 4 approved modifications in all. Last revised December 28, 2011. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- —
- Models
- General Electric CompanyCF6-45A, General Electric CompanyCF6-45A2, General Electric CompanyCF6-50A, General Electric CompanyCF6-50C, General Electric CompanyCF6-50C1, General Electric CompanyCF6-50C2, General Electric CompanyCF6-50C2B, General Electric CompanyCF6-50C2D, General Electric CompanyCF6-50CA, General Electric CompanyCF6-50E, General Electric CompanyCF6-50E1, General Electric CompanyCF6-50E2, General Electric CompanyCF6-50E2B
- Type certificates
- E23EA, E23EA, E23EA, E23EA, E23EA, E23EA, E23EA, E23EA, E23EA, E23EA, E23EA, E23EA, E23EA
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 7, 2026.