CTHIn ForceLegislation
AD/EMB-145/22 - Landing Gear Electronic Unit
Embraer EMB-135 and EMB-145 Series AeropEmbraer EMB-135 and EMB-145 Series Aeroplanes
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Embraer EMB-135 and EMB-145 Series Aeroplanes
| AD/EMB-145/22 | Landing Gear Electronic Unit | 3/2009 |
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| Applicability: | EMB-135 and EMB-145 series aeroplanes equipped with Landing Gear Electronic Unit (LGEU) part number (P/N) 355-022-002. |
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| Requirement: | 1. Replace any LGEU P/N 355-022-002 with serial number (S/N) from 1000 to 1999 with LGEU P/N 355-022-003, according to the detailed instructions and procedures described in the Embraer Service Bulletins (SB) 145-32-0120 original issue or 145LEG-32-0032 original issue, as applicable, or later revisions approved by the Brazilian Agência Nacional de Aviação Civil (ANAC). |
| 2. Replace any LGEU P/N 355-022-002 with any S/N not included inRequirement 1 with LGEU P/N 355-022-003, according to the detailed instructions and procedures described in the SB 145-32-0120 original issue or SB 145LEG-32-0032 original issue, as applicable, or later revisions approved by the ANAC. | |
| 3. LGEU P/N 355-022-002 may not be installed on any aeroplane as either a replacement spare or new installation. | |
| Note: ANAC AD 2009-01-01 and Errata refers. | |
| Compliance: | For Requirement 1 - Within the next 12 months after the effective date of this Directive. |
| For Requirement 2 - Within the next 30 months after the effective date of this Directive. | |
| For Requirement 3 - After 12 September 2011. | |
| This Airworthiness Directive becomes effective on 12 March 2009. | |
| Background: | The ANAC has received a report advising that after commanding the landing gear lever to down the three green landing gear positioning indication was displayed followed by the LG/LEVER DISAGREE EICAS message. The crew decided to continue the approach and landing procedure. As soon as the crew identified that the landing gear was not extended properly, a go-around procedure was successfully performed. During manoeuvre, the aeroplane settled momentarily onto the flaps and belly. |
| Since this condition may occur in other aeroplanes of the same type and affects flight safety, a corrective action is required. |
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