ST01508CH-D
Installation of Honeywell MK VIII Enhanced Ground Proximity Warning System (EGPWS) with optional terrain display. Approved for all serial numbers for models 500, 550 and S550. Approved for serial numbers 0001 through 0538 for model 560. Held by Duncan Aviation INC, which holds 316 approved modifications in all. Last revised September 16, 2008. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 500, 550, S550, 560
- Type certificates
- A22CE, A22CE, A22CE, A22CE
- On this site
- Cessna 500 Citation I 62 registered
Cessna 550 Citation II 500 registered
Cessna 560 Citation V, Ultra, Encore and Excel 1,344 registered
Cessna S550 94 registered - 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 20, 2026.