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Airworthiness directives › 2017-04-12

AD 2017-04-12 Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (Embraer) Airplanes

2017-03-29
2017-02-22
39-18807
FAA-2016-9049
Airframe
—

Models named: EMB-135ER, EMB-135KE, EMB-135KL, EMB-135LR, EMB-145, EMB-145EP, EMB-145ER, EMB-145LR, EMB-145MP, EMB-145MR. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

This AD applies to the Empresa Brasileira de Aeronautica S.A. (Embraer) airplanes, certificated in any category, identified in paragraphs (c)(1) through (c)(4) of this AD. (1) Model EMB-135ER, EMB-135KE, EMB-135KL, EMB-135LR, EMB-145, EMB-145EP, EMB-145ER, EMB-145LR, EMB-145MP, EMB-145MR, and EMB-145XR airplanes, as identified in Embraer Service Bulletin 145-30-0056, Revision 03, dated February 6, 2015. (2) Model EMB-135BJ airplanes, as identified in Embraer Service Bulletin 145LEG-30-0021, dated March 31, 2014. (3) Model EMB-135ER, EMB-135KE, EMB-135KL, EMB-135LR, EMB-145, EMB-145EP, EMB-145ER, EMB-145LR, EMB-145MR, EMB-145MP, and EMB-145XR airplanes, manufacturer serial numbers (MSNs) 14501153 and subsequent. (4) Model EMB-135BJ airplanes, MSNs 14501190 through 14501197 inclusive, 14501199 through 14501210 inclusive, 14501212 through 14501227 inclusive, 14501229 through 14501249 inclusive, and subsequent.

Compliance

Comply with this AD within the compliance times specified, unless already done.

Required actions

(1) For airplanes identified as Group 1 in Embraer Service Bulletin 145-30-0056, Revision 03, dated February 6, 2015: Within 6,600 flight hours after the effective date of this AD, do a general visual inspection for tube misalignment on the pitot number 1 and pitot number 2 tube assemblies; do all applicable corrective actions; and install a new tube ribbon heater on the pitot number 1 and pitot number 2 tube assemblies; in accordance with the Accomplishment Instructions of Embraer Service Bulletin 145-30-0056, Revision 03, dated February 6, 2015. Do all applicable corrective actions before further flight. (2) For airplanes identified as Group 1 in Embraer Service Bulletin 145LEG-30-0021, dated March 31, 2014: Within 5,000 flight hours or 48 months after the effective date of this AD, whichever occurs first, do a general visual inspection for tube misalignment on the pitot number 1 and pitot number 2 tube assemblies; do all applicable corrective actions; and install a new tube ribbon heater on the pitot number 1 and pitot number 2 tube assemblies; in accordance with the Accomplishment Instructions of Embraer Service Bulletin 145LEG-30-0021, dated March 31, 2014. Do all applicable corrective actions before further flight.

Unsafe condition

This AD was prompted by reports of main airspeed indication discrepancies during flight; these discrepancies resulted from ice blockages in certain pitot total pressure lines. We are issuing this AD to detect and correct water accumulating and freezing in the pitot number 1 and pitot number 2 total pressure lines, which could result in erroneous main airspeed indications and consequent reduced ability of the flightcrew to maintain safe flight and landing of the airplane.

Affected ADs

None.

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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1