Airworthiness Directive · Amendment 39-16359 · Pneumatic
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and ERJ 190 Airplanes
Superseded. A later AD replaced this one: AD 2013-11-17. Comply with the one in force.
This AD applies to the airplanes identified in paragraphs (c)(1) and (c)(2) of this AD, certificated in any category.
(1) Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170-100 LR, -100 STD, -100 SE, and -100 SU airplanes; and Model ERJ 170-200 LR, -200 STD, and -200 SU airplanes; equipped with Hamilton Sundstrand low pressure check valve (LPCV) having part number (P/N) 1001447-3.
(2) Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 190-100 ECJ, -100 LR, -100 IGW, -100 STD airplanes; and Model ERJ 190-200 STD, -200 LR, and -200 IGW airplanes; equipped with Hamilton Sundstrand LPCV having P/N 1001447-3 or 1001447-4.
We are superseding an existing airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI for EMBRAER Model ERJ 170 airplanes describes the unsafe condition as:
For Model ERJ 170-100 LR, -100 STD, -100 SE, and -100 SU airplanes: Within 100 flight hours after November 29, 2005 (the effective date of AD 2005-23-14, which was superseded by AD 2007-16-09), or prior to the accumulation of 3,000 total flight hours, whichever occurs later, replace the low-stage check valve and associated seals of the RH engine's engine bleed system with a new check valve and new seals, in accordance with the Accomplishment Instructions of EMBRAER Alert Service Bulletin 170-36-A004, dated September 28, 2005; or paragraph 3.C. of the Accomplishment Instructions of EMBRAER Service Bulletin 170-36-0004, dated November 18, 2005, or Revision 01, dated March 10, 2008. As of the effective date of this AD, only use EMBRAER Service Bulletin 170-36-0004, Revision 01, dated March 10, 2008. Repeat the replacement thereafter at intervals not to exceed 3,000 flight hours.
Although EMBRAER Alert Service Bulletin 170-36-A004, dated September 28, 2005, specifies to send removed check valves to the manufacturer, this AD does not include that requirement.
Restatement of Certain Requirements of AD 2007-16-09, With Revised Service Information:
For Model ERJ 170-100 LR, -100 STD, -100 SE, -100 SU, -200 LR, -200 STD, and -200 SU airplanes: Within 300 flight hours after September 13, 2007 (the effective date of AD 2007-16-09) or prior to the accumulation of 3,000 total flight hours, whichever occurs later, replace the low-stage check valve and associated seals of the LH engine's engine bleed system with a new check valve and new seals, in accordance with paragraph 3.B. of the Accomplishment Instructions of EMBRAER Service Bulletin 170-36-0004, dated November 18, 2005; or Revision 01, dated March 10, 2008. As of the effective date of this AD, only use EMBRAER Service Bulletin 170-36-0004, Revision 01, dated March 10, 2008. Repeat the replacement thereafter at intervals not to exceed 3,000 flight hours.
(i) Although EMBRAER Service Bulletin 170-36-0004, dated November 18, 2005, specifies to send removed check valves to the manufacturer, this AD does not include that requirement.
New Requirements of This AD:
Unless already done, do the following actions.
(1) For Model ERJ 170-200 LR, -200 STD, and -200 SU airplanes: Within 100 flight hours after the effective date of this AD, or prior to the accumulation of 3,000 total flight hours, whichever occurs later, replace the low-stage check valve and associated seals of the RH engine's engine bleed system with a new check valve and new seals, in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 170-36-0004, Revision 01, dated March 10, 2008. Repeat the replacement thereafter at intervals not to exceed 3,000 flight hours.
(2) For Model ERJ 170-100 LR, -100 STD, -100 SE, -100 SU, -200 LR, -200 STD, and -200 SU airplanes: Replacing the LPCV having P/N 1001447-3 with a new one having P/N 1001447-4 in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 170-36-0011, Revision 02, dated July 19, 2007, terminates the repetitive replacements required by paragraphs (f), (h), and (j)(1) of this AD.
(3) For Model ERJ 170-100 LR, -100 STD, -100 SE, -100 SU, -200 LR, -200 STD, and -200 SU airplanes, at the earlier of the times specified in paragraphs (j)(3)(i) and (j)(3)(ii) of this AD, revise the maintenance program to include maintenance Task 36-11-02-002 (Low Stage Bleed Check Valve), specified in Section 1 of the EMBRAER 170 Maintenance Review Board Report (MRBR), MRB-1621, Revision 6, dated January 14, 2010. Thereafter, except as provided by paragraph (k) of this AD, no alternative inspection intervals may be approved for the task.
(i) Within 180 days after accomplishing paragraph (j)(2) of this AD.
(ii) Before any LPCV having P/N 1001447-4 accumulates 3,000 total flight hours, or within 300 flight hours after the effective date of this AD, whichever occurs later.
(4) For Model ERJ 170-100 LR, -100 STD, -100 SE, -100 SU, -200 LR, -200 STD, and -200 SU airplanes: As of the effective date of this AD, no person may install any LPCV identified in paragraph (j)(4)(i) or (j)(4)(ii) of this AD on any airplane.
(i) Any LPCV having P/N 1001447-3, installed on Model ERJ-170 airplanes, that has accumulated more than 3,000 total flight hours.
(ii) Any LPCV having P/N 1001447-3, installed on Model ERJ-170 and ERJ-190 airplanes, that has accumulated 3,000 or more total flight hours. To calculate the equivalent number of flight hours for a LPCV having P/N 1001447-3 that was installed on Model ERJ-190 airplane to be installed on a Model ERJ-170 airplane, the flight hours accumulated in operation on ERJ-190 models must be multiplied by a factor of 2 (100 percent).
(5) For Model ERJ 190-100 ECJ, -100 LR, -100 IGW, -100 STD, -200 STD, -200 LR, and -200 IGW airplanes: Within 100 flight hours after the effective date of this AD, replace all LPCVs having P/N 1001447-3 that have accumulated 1,500 total flight hours or more as of the effective date of this AD, with a new or serviceable LPCV having P/N 1001447-4 that has accumulated less than 2,000 total flight hours since new or since overhaul, in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 190-36-0006, Revision 01, dated July 19, 2007.
(6) For Model ERJ 190-100 ECJ, -100 LR, -100 IGW, -100 STD, -200 STD, -200 LR, and -200 IGW airplanes: Replace all LPCVs having P/N 1001447-3 that have accumulated less than 1,500 total flight hours as of the effective date of this AD, before the LPCV accumulates 1,500 total flight hours or within 100 flight hours after the effective date of this AD, whichever occurs later. Replace that LPCV with a new or serviceable LPCV having P/N 1001447-4 that has accumulated less than 2,000 total flight hours since new or since overhaul, in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 190-36-0006, Revision 01, dated July 19, 2007.
(7) For Model ERJ 190-100 ECJ, -100 LR, -100 IGW, -100 STD, -200 STD, -200 LR, and -200 IGW airplanes: Within 200 flight hours after the effective date of this AD, or before any LPCV having P/N 1001447-4 installed on the right engine accumulates 2,000 total flight hours since new or since overhaul, whichever occurs later, replace the valve with a new or serviceable LPCV having P/N 1001447-4 that has accumulated less than 2,000 total flight hours since new or since overhaul, in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 190-36-0014, Revision 01, dated January 14, 2009. Repeat the replacement on the right engine at intervals not to exceed 2,000 total flight hours on the LPCV since new or last overhaul.
(8) For Model ERJ 190-100 ECJ, -100 LR, -100 IGW, -100 STD, -200 STD, -200 LR, and -200 IGW airplanes: Within 200 flight hours after the effective date of this AD, or before any LPCV having P/N 1001447-4 installed on the left engine accumulates 2,000 total flight hours since new or last overhaul, whichever occurs later, replace the valve with a new or serviceable LPCV having P/N 1001447-4 that has accumulated less than 2,000 total flight hours since new or since overhaul, in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 190-36-0014, Revision 01, dated January 14, 2009. Repeat the replacement on the left engine at intervals not to exceed 2,000 total flight hours on the LPCV since new or last overhaul.
(9) For Model ERJ 190-100 ECJ, -100 LR, -100 IGW, -100 STD, -200 STD, -200 LR, and -200 IGW airplanes: As of the effective date of this AD, installation on the left and right engines with a LPCV having P/N 1001447-4 is allowed only if the valve has accumulated less than 2,000 total flight hours since new or last overhaul prior to installation.
(10) For Model ERJ 190-100 ECJ, -100 LR, -100 IGW, -100 STD, -200 STD, -200 LR, and -200 IGW airplanes: As of the effective date of this AD, no LPCV having P/N 1001447-3 may be installed on any airplane. Any LPCV having P/N 1001447-3 already installed on an airplane may remain in service until reaching the flight-hour limit defined in paragraphs (j)(5) and (j)(6) of this AD.
(11) Replacing the LPCV is also acceptable for compliance with the requirements of paragraph (j)(2) of this AD if done before the effective date of this AD in accordance with EMBRAER Service Bulletin 170-36-0011, dated January 9, 2007; or EMBRAER Service Bulletin 170-36-0011, Revision 01, dated May 28, 2007.
(12) Replacing the LPCV is also acceptable for compliance with the requirements of paragraphs (j)(5) and (j)(6) of this AD if done before the effective date of this AD in accordance with EMBRAER Service Bulletin 190-36-0006, dated April 9, 2007.
(13) Replacing the LPCV is also acceptable for compliance with the corresponding replacement in paragraph (j)(1) of this AD if done before the effective date of this AD in accordance with EMBRAER Service Bulletin 170-36-0004, dated November 18, 2005.
(14) Revising the maintenance program to include maintenance Task 36-11-02-002 (Low Stage Bleed Check Valve) specified in Section 1 of the EMBRAER 170 Maintenance Review Board Report (MRBR), MRB-1621, Revision 5, dated November 5, 2008, is acceptable for compliance with the requirements of paragraph (j)(3) of this AD if done before the effective date of this AD.
Note 1: The actions in paragraphs (j)(5), (j)(6), (j)(7), (j)(8), (j)(9), and (j)(10) of this AD are considered interim action until a final action is identified, at which time we might consider issuing further rulemaking.
Note 2: This AD differs from the MCAI and/or service information as follows: No differences.
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.
