The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

ST02718LA

Modification to replace the existing standby instrument. Held by Acron Aviation INC., which holds 73 approved modifications in all. Last revised August 26, 2025. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.
Models
550, 560, 560XL, S550, Hawker 750, Hawker 800, Hawker 800XP, Hawker 850XP, Hawker 900XP
Type certificates
A22CE, A22CE, A22CE, A22CE, A3EU, A3EU, A3EU, A3EU, A3EU
On this site
Cessna 560 Citation V, Ultra, Encore and Excel 1,343 registered
Cessna S550 94 registered
Hawker Beechcraft Corp HAWKER 750 28 registered
Hawker Beechcraft Corp HAWKER 900 129 registered
Raytheon Corporate Jets Inc HAWKER 800 33 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 8, 2026.