Airworthiness Directive · Amendment 39-18807 · Ice and rain protection
Empresa Brasileira de Aeronautica S.A. (Embraer) Airplanes
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.
We are adopting a new airworthiness directive (AD) for certain Empresa Brasileira de Aeronautica S.A. (Embraer) Model EMB-135BJ, EMB- 135ER, EMB-135KE, EMB-135KL, EMB-135LR, EMB-145, EMB-145EP, EMB-145ER, EMB-145LR, EMB-145MP, EMB-145MR, and EMB-145XR airplanes. 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. This AD requires an inspection for tube misalignment of the pitot number 1 and pitot number 2 tube assembly lines, and corrective actions if necessary; installation or replacement (as applicable) of a tube ribbon heater on the pitot number 1 and pitot number 2 tube assembly lines; and revision of the airplane flight manual (AFM) to provide certain procedures and airspeed tables for the flightcrew. We are issuing this AD to address the unsafe condition on these products.
(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.
(1) For airplanes identified as Group 2 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 replace the tube ribbon heater with 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 2 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 replace the tube ribbon heater with 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.
(1) For airplanes identified in paragraphs (c)(1) and (c)(3) of this AD: Within 60 days after the effective date of this AD, revise the AFM to include the information in the “Unreliable Airspeed Procedure” in the Emergency/Abnormal Procedures section and the “Unreliable Airspeed Tables” (corresponding to the airplane configuration) in the Performance section, as specified in Embraer Temporary Revision (TR) 40.2, dated April 4, 2014, to Volume 1, of the Embraer EMB-145 Aircraft Operations Manual (AOM) AOM-145/1114-01 (“Embraer TR 40.2”).
(2) For airplanes identified in paragraphs (c)(2) and (c)(4) of this AD: Within 60 days after the effective date of this AD, revise the AFM to include the information in the “Unreliable Airspeed Procedure” in the Emergency/Abnormal Procedures section and the “Unreliable Airspeed Tables” (corresponding to the airplane configuration) in the Performance section, as specified in Embraer TR 19.1, dated April 22, 2014, to Volume 1 of the Embraer EMB-145 AOM AOM-135/1542-01 (“Embraer TR 19.1”).
The AFM revisions required by paragraphs (i)(1) and (i)(2) of this AD may be done by inserting Embraer AOM TR 40.2 or Embraer AOM TR 19.1, as applicable, into the AFM. When the applicable Embraer AOM TR has been included in general revisions of the AFM, the general revisions may be inserted in the AFM, provided the relevant information in the general revision is identical to that in Embraer AOM TR 40.2 or Embraer AOM TR 19.1, as applicable, and the applicable Embraer AOM TR may be removed from the AFM.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
