- Effective
- June 23, 1973
- Models
- D.H.114 Heron Series 2A, D.H.114 Heron Series 2DA, D.H.114 Heron Series 2X
- Data sheet
- TCDSA-816
- Registered aircraft
- 1 matched by model
- Product
- Aircraft · Small/large airplane
- Amendment
- 39-1671
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
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On this page
The airworthiness directive
73-13-06 HAWKER SIDDELEY: Amdt. 39-1671. Applies to Hawker Siddeley deHavilland Model DH-114 "Heron" Airplanes, having Modifications 496 installed.
Compliance is required as indicated.
To prevent possible inadvertent actuation of aileron and rudder trim in a direction other than that desired and to prevent possible interference by the aileron trim jack with the aileron when in its full down position, accomplish the following:
Prior to September 21, 1973, unless already accomplished, incorporate Hawker Siddeley Modifications Nos. 1006 and 1053, or FAA-approved equivalents.
This amendment becomes effective June 23, 1973.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 1
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.