AD 2004-01-13 Airworthiness Directives; Raytheon Aircraft Company Model 1900, 1900C, and 1900D Airplanes

Makes named: raytheon. Read the applicability below — it usually turns on serial or part numbers too.

(c) This AD affects the following airplane models and serial numbers that are: (1) certificated in any category; and (2) equipped with vent blower assembly, part number 114-380028-1, 114-380028-3, 114-380028-5, or 114-380028-7.   Model Serial numbers 1900 UA-3. 1900C UB-1 through UB-74 and UC-1 through UC-174. 1900 (C-12J) UD-1 through UD-6. 1900D UE-1 through UE-427.

(e) To address this problem, you must do the following:   Actions Compliance Procedures (1) Check the maintenance records to determine if a part number (P/N) 114-380028-1, 114-380028-3, 114-380028-5, or 114-380028-7 ventilation blower assembly is installed Within the next 800 hours time-in-service (TIS) after February 19, 2004 (the effective date of this AD), unless already done Follow Raytheon Aircraft Mandatory Service Bulletin SB 21-3448, Issued: October, 2002. The owner/operator holding at least a private pilot certificate as authorized by section 43.7 of the Federal Aviation Regulations (14 CFR 43.7) may perform this check. (2) If, by checking the maintenance records, the owner/operator can definitely show that a P/N 114-380028-1, 114-380028-3, 114-380028-5, or 114-380028-7 ventilation blower assembly is not installed, no further action is required by this AD. Make an entry into the aircraft records showing compliance with this portion of the AD in accordance with section 43.9 of the Federal Aviation Regulations (14 CFR 43.9) Prior to further flight after the maintenance records check required in paragraph (e)(1) of this AD The owner/operator holding at least a private pilot certificate as authorized by section 43.7 of the Federal Aviation Regulations (14 CFR 43.7) may make this entry. (3) If, by checking the maintenance records, the owner/operator can definitely show that a P/N 114-380028-1, 114-380028-3, 114-380028-5, or 114-380028-7 ventilation blower assembly is installed, do the following for each P/N: Do all modifications prior to further flight after the maintenance records check required in paragraph (e)(1) unless already done Following Raytheon Aircraft Mandatory Service Bulletin SB 21-3448, Issued: October, 2002, and Raytheon Service Bulletin No. 2721, Issued: January, 1997. (i) P/N 114-380028-1: modify following Raytheon Service Bulletin No. 2721, Issued: January, 1997, prior to incorporating Electromechanic Technologies Modification Kit No. P/N 630-203-01 and changing the P/N to 114-380028-11 (ii) P/N 114-380028-3: incorporate Advanced Industries Modification Kit No. P/N BC80A-901-3 and change the P/N to 114-380028-9 (iii) P/N 114-380028-5 with a serial number (S/N) of 2162 or above or with a S/N of 2162 with an “A” suffix: no modification is required. Change the P/N to 114-380028-11 and make an entry into the aircraft records that shows compliance with this portion of the AD in accordance with section 43.9 of the Federal Aviation Regulations (14 CFR 43.9) (iv) P/N 114-380028-5 with a S/N prior to 2162 without an “A” suffix: incorporate Electromechanic Technologies Modification Kit No. P/N 630-203-01 and change the P/N to 114-380028-11 (v) P/N 114-380028-7: incorporate Advanced Industries Modification Kit No. P/N BC80A-901-3 and change the P/N to 114-380028-9 (4) If the owner/operator cannot definitely show that a P/N 114-380028-1, 114-380028-3, 114-380028-5, or 114-380028-7 ventilation blower assembly is installed through the maintenance records check, an appropriately-rated mechanic must do an inspection to determine the P/N of the installed ventilation blower assembly and do the applicable modification required in paragraphs (e)(3)(i), (e)(3)(ii), (e)(3)(iii), (e)(3)(iv), and (e)(3)(v) of this AD Inspect within the next 800 hours TIS after February 19, 2004 (the effective date of this AD). Do all modifications prior to further flight Follow Raytheon Aircraft Mandatory Service Bulletin SB 21-3448, Issued: October, 2002, and Raytheon Service Bulletin No. 2721, Issued: January, 1997. (5) Do not install any P/N 114-380028-1, 114-380028-3, 114-380028-5, or 114-380028-7 ventilation blower assembly, unless it has been modified as specified in paragraphs (e)(3)(i), (e)(3)(ii), (e)(3)(iii), (e)(3)(iv), and (e)(3)(v) of this AD As of February 19, 2004 (the effective date of this AD) Follow Raytheon Aircraft Mandatory Service Bulletin SB 21-3448, Issued: October, 2002, and Raytheon Service Bulletin No. 2721, Issued: January, 1997.

(d) This AD is the result of reports that vent blower assemblies modified in accordance with AD 97-22-16 are still malfunctioning. The actions specified in this AD are intended to prevent smoke from entering the cockpit and cabin due to the current configuration of vent blower assemblies, which could result in the pilot becoming incapacitated or impairing his/her judgment. This condition could lead to the pilot not being able to make critical flight safety decisions and result in loss of control of the airplane.

(b) This AD supersedes AD 97-22-16, Amendment 39-10187 (62 FR 58894, October 31, 1997).