Extended Part 21J Engineering Services

In addition to minor changes, F/LIST GERMANY's design organization, which is accredited in accordance with EASA Part 21J, is now also permitted to perform major changes and STCs for all aircraft categories.


Category: Press release

“We are delighted that OHS can now offer more extensive modifications on all sizes of aircraft from small aircraft right through to very large aircraft on an international level” says Chief Operating Officer (COO) Gregor Bremer. 

OHS are experts in modifications to cabin seating and furnishings, e.g. with in-flight entertainment systems, SATCOM, wireless routers, power supply or galley remodelling. With the expansion of the new portfolio of services modifications can now also be developed to adaptaircraft for use on special missions such as flight inspection services, Medevac or research purposes and ISR missions. OHS offers its engineering services to an international customer base and can call on a global network of specialists and partners if required. The combination of high-value refurbishment services and full-service engineering is unique in Germany.

 EASA approved Part 21J Engineering Services: 

  ...for all aircraft categories CS 23, CS 25

  • STCs 
  • Major Changes & Repairs
  • Minor Changes & Repairs

Design changes and repairs:

  • Aerodynamics
  • Avionics
  • Electrics
  • Flight
  • Interior
  • Structure


The OHS engineering experts will provide you with all the assistance you need:

Gregor Bremer (COO)

T: +49 (0) 30 - 88 75 43 92 E:

Dr. Ing. Inken Peltzer (HEAD OF ENGINEERING)

T: +49 (0) 30 - 88 75 43 94 E: 

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