- do the AIDS Programmable Report.
**ON A/C 204-210,
A. Solution 1: aircraft without AIDS. If the POST FLIGHT REPORT gives the maintenance message AOA SNSR1 (3FP1)/ SNSR2 (3FP2)/SNSR3 (3FP3):
- do a visual check of the SENSOR-ANGLE OF ATTACK, 1 (3FP1), SENSOR-ANGLE OF ATTACK, 2 (3FP2) and SENSOR-ANGLE OF ATTACK, 3 (3FP3).
(1) If one angle of attack sensor is damaged:
- replace the defective angle of attack sensor (Ref. AMM TASK 34-11-19-000-001) and (Ref. AMM TASK 34-11-19-400-001).
(2) If the angle of attack sensors are not damaged:
- do the ADIRS start procedure (Ref. AMM TASK 34-10-00-860-002)
- connect the ARINC Reader to the test connector 198VC on the panel 188VU and to the test connector 199VC on the panel 187VU (Ref. ASM 34-13/01)
- manually turn the angle of attack sensors (3FP1), (3FP2) and (3FP3) to the down position
- manually turn the angle of attack sensors (3FP1), (3FP2) and (3FP3) to the up position
- compare the angle of attack values (between -35 deg. and -34.5 deg. for the down position and between +84.5 deg. and +85 deg. for the up position) read on label 221:
ADIRU 1 199VC pins GG, HH 3FP1
ADIRU 2 198VC pins GG, HH 3FP2
ADIRU 3 199VC pins y, z 3FP3
(a) If one value is different:
- replace the defective angle of attack sensor (Ref. AMM TASK 34-11-19-000-001) and (Ref. AMM TASK 34-11-19-400-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 051-099, 106-149, 204-299, 301-399, ∞∞34-11-00∞∞∞∞∞∞∞∞∞∞Page 285
401-499, Aug 01/05 CES
B. Solution 2: with AIDS. If the POST FLIGHT REPORT gives the maintenance message AOA 3FP1 - AOA 3FP2 - AOA 3FP3 DISAGREE or AOA SNSR1 (3FP1)/ SNSR2 (3FP2)/SNSR3 (3FP3):
- do a visual check of the SENSOR-ANGLE OF ATTACK, 1 (3FP1), SENSOR-ANGLE OF ATTACK, 2 (3FP2) and SENSOR-ANGLE OF ATTACK, 3 (3FP3).
(1) If one angle of attack sensor is damaged:
- replace the defective angle of attack sensor (Ref. AMM TASK 34-11-19-000-001) and (Ref. AMM TASK 34-11-19-400-001).
(2) If the angle of attack sensors are not damaged:
- do the ADIRS start procedure (Ref. AMM TASK 34-10-00-860-002)
- do the paragraph related to the Parametre Label Call-Up via MCDU of the Access to the Parameter Call-Up Menus procedure (Ref. AMM TASK 31-36-00-740-008)
- manually turn the angle of attack sensors (3FP1), (3FP2) and (3FP3) to the down position,
- manually turn the angle of attack sensors (3FP1), (3FP2) and (3FP3) to the up position,
- compare the angle of attack values (between -35. and -34.5. for the down position and between +84.5. and +85. for the up position) read on label 221:
(a) If one value is different:
- replace the defective angle of attack sensor (Ref. AMM TASK 34-11-19-000-001)> and (Ref. AMM TASK 34-11-19-400-001).
(b) If the values are corrects:
- do the AIDS programmable report given in Para. C.
R **ON A/C 051-099, 106-149, 211-299, 301-399, 401-499,
C. AIDS Programmable Report
NOTE : For AIDS access password, refer to the paragraph Users Access
____
Levels (Ref. AMM 31-36-00 P.Block 001).
(1) Description
The basic principles of the proposed method are:
(a) Creation of an absolute AOA Reference (AOAref) independent of the external airflow, to which the 3 AOA sensors can be compared.
(b) Estimation of acceptable tolerances between the AOAref and the output values of the 3 AOA sensors (AOA1, AOA2, AOA3).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 201-299, ∞∞34-11-00∞∞∞∞∞∞∞∞∞∞Page 286
301-399, 401-499, Aug 01/05 CES
(c) Identification and rejection of the AOA sensor(s) evidenced to be out of tolerances.
The AOA ref is obtained by differentiating the Pitch angle (PITCH) and the Flight Path Angle (FPA):
AOA ref = PITCH - FPA
(Ref. Fig. 201/TASK 34-11-00-991-001)
To carry out this monitoring, the 3 AOA sensors, the Pitch Angle and the Flight Path Angle will be recorded on an AIDS programmable report.
NOTE : You must have the conditions below to start the recording:
____
- Slats/Flaps retracted
- autopilot engaged in ALT (Altitude) mode
- autothrust engaged in SPD/MACH mode
- 2 deg. LH < Roll Angle < 2 deg. RH 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 导航 NAVIGATION 1(34)
