# Search: Delta Engineering

Proposed ADs: 6 matches in release 2026-10-30. Page 1.

- [NPRM FAA-2005-22430](https://openairdocs.org/proposed/FAA-2005-22430.md): Turbomeca · Published Jan 17, 2007
  > …**delta** pressure (**delta** P) diaphragm. We are proposing this AD to prevent an uncommanded **engine** in…
- [NPRM FAA-2015-5539](https://openairdocs.org/proposed/FAA-2015-5539.md): Turbomeca · Published Jan 4, 2016
  > …This proposed AD would also require replacing the constant **delta**-pressure (**delta**-P) diaphragm of the…
- [NPRM FAA-2007-27009](https://openairdocs.org/proposed/FAA-2007-27009.md): Turbomeca · Published Mar 22, 2010
  > The FAA proposes to revise an existing airworthiness directive (AD) for Turbomeca Arriel 2B1 turboshaft **engines**…
- [NPRM FAA-2012-1114](https://openairdocs.org/proposed/FAA-2012-1114.md): CFM International · Published Jan 14, 2013
  > …series turbofan **engines**. This proposed AD was prompted by corrosion of the **delta** P valve in…
- [NPRM FAA-2007-27009](https://openairdocs.org/proposed/FAA-2007-27009.md): Turbomeca · Published Dec 24, 2013
  > …Arriel 2B1 turboshaft **engines** that do not have modification TU157 incorporated. AD 2007-19-09R1 requires…
- [NPRM FAA-2022-1422](https://openairdocs.org/proposed/FAA-2022-1422.md): CFM International · Published Dec 1, 2022
  > …This proposed AD would require repetitive calculations of the oil filter **delta** pressure (OFDP) data and…

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