Airplane Flight Manual Temporary Revision / Landing Gear - Power Brake Valves - Replacement
- Published
- Effective
- Deadline
- Replaces
- 2018-11-05
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must insert the specified temporary revision TR 01.1 into the airplane flight manual before further flight after May 29, 2018, and replace any installed PBV with part numbers HJ1-13243-101-005 or HJ1-13243-101-007 with the improved PBV part number HJ1-13243-101-009 within 12 months of the AD's effective date, November 27, 2018.
Summary
Airplane Flight Manual Temporary Revision / Landing Gear - Power Brake Valves - Replacement is a Federal Aviation Administration (FAA) Airworthiness Directive (AD 2018-21-13) addressing Honda Aircraft Company LLC Model HA-420 airplanes. The directive targets power brake valves (PBVs) with part numbers HJ1-13243-101-005 and HJ1-13243-101-007, requiring replacement with an improved PBV part number HJ1-13243-101-009 to correct unsafe braking conditions.
What changed
This AD supersedes AD 2018-11-05 by retaining the temporary flight manual revision and mandating replacement of the faulty PBVs with improved parts within 12 months. It removes the previous optional terminating action provision, making the replacement a required long-term corrective measure.
Why it matters
This directive is critical for aviation professionals because it addresses unannunciated asymmetric braking issues that can degrade braking performance and reduce directional control during ground operations and landing. Compliance ensures continued airworthiness and safety of Honda HA-420 aircraft, preventing potential accidents related to brake valve failure.
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