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Fig. 38-3 Autoflight status annunciator
annunciations are warning lights. A flashing red light indicates that the
system has disengaged. A steady red and amber is used to indicate other
types of system malfunction. The test switch is spring loaded to the
center position. In the TEST 1 position, the A/P light is illuminated
steady amber. In TEST 2, theA/P light is illuminated steady red.In figure
38-4, the thrust mode annunciation ( TMA ) shows on the primary engine
display( PED). The annunciations are TO, R-TO, CLB, R-CLIMB, CRZ,
GA and CON. The TMA shows dashed if no computed data (NCD) is
received from the FMC and blanks if the data is not valid. An A/T LIM
light above the PED turns on if the A/T computer limit is being used
instead of the FMC limit.
Fig. 38-4 TMA
[5] We know that the EADIs are located on captain's and first officer's
instrument panels. A/T modes, pitch modes, roll modes and the DFCS
status are annunciated in the upper left and upper right corners of the
EADI. An engaged mode is annunciated in green and armed mode in
white. When a new mode is engaged, a box is diplayed around the
engaged mode for 10 sec. DFCS status annunciations, F/D , CMD and
TEST are green. CWS PITCH and CWS ROLL are yellow annunciation.
DFCS status annunciation provides an indication of the operating status
of the DFCS to the flight crew. Flight director command bars are
magenta. The F/D are displayed with F/D switch in the ON position and a
valid mode selected. A yellow F/D flag is displayed on the EADI when
the FCC is not valid. If a sensor is not valid for the mode in use, the
command bar is biased out of view.
Fig. 38-5 EADI F/D and FMA
On the left side of EADI, an airspeed tape moves against a fixed pointer.
An arrow points up or down to indicate that the airplane's speed is
increasing or decreasing. The target speed is supplied by the MCP to the
EADI symbol generator. This target is the MCP selected speed or the
FMC target speed in VNAV. It is represented as a magenta index. If the
target speed is off scale, the selected speed appears as a three digit
number above or below the speed tape, depending upon current speed
relative to the target speed.
READING MAERIAL
QUESTIONS TO LESSON 38 READING MATERIAL
1. What are installed in the throttle lever handles?
2. Where is a pushbutton exposed on to actuate the switch?
3. Where are the A/P disconnect switches located in ?
4. Where are the TO/GA switches installed on ?
5. what switch is located on the control stand?
6. where is the yaw damper switch located on ?
7. What is located on the forward electronics panel P9 ?
8. How are the A/T disengage switches operated ?
9. Why are the A/T disengage switches wired in series ?
10. How to disconnect either autopilot ?
11. When do the red A/P warn lights extinguish ?
EXERCISE
A. Find out the explanations of the following words in your
"English-chinese technical dictionary"
1. placard [P1-114]
2. reduced thrust [P1-123]
3. maintenance [P1-97]
4. flag [P1-60]
5. VMO [P1-166]
6. MMO [P1-102]
7. annunciator [P1-11]
B. Translate lst and 3rd paragraphs of lesson 38 into chinese.
C. Explain the following abbreviations and acronyms.
1. CWS
2. PB
3. R - TO
4. R - CLIMB
5. CON
6. NCD
7. CMD
8. ALT ACQ
9. G/S
10. VNAV ALT
D. Answer the questions 1～11 that are given for lesson 38 reading
material.
LESSON 39
DFCS NORMAL OPERATION (1)
VOCABULARY
1. dual channel [ 'tænl ] 雙通道
2. operational procedure 工作程序;運(yùn)行程序
3. preflight [ pri:'flait ] a. 起飛前的, v. 做起飛前檢查
4. assure [ ' u ] vt. 保證;使確信
5. stab = stabilizer
6. cutout switch [ 'ktaut ] 切斷電門;斷流電門
7. adjacent [  'd eisnt ] a. 鄰近的;相鄰的
8. runway heading 跑道方向
9. schedule [ 'skedju:l ] n. 進(jìn)程,預(yù)定計(jì)劃vt. 預(yù)(排)定
10. scheduled target speed 預(yù)定目標(biāo)速度
11. clearance altitude [ 'klirns ] 許可(允許) 高度
12. wing level 平飛; 大翼改平
13. rotation [ rou' tein ] n. 抬前輪
14. liftoff [ lift' :f ] n. 升空;起飛
15. attain [ 'tein ] v. 到達(dá);完成
16. unsquat [ n 'skw t ] a. 飛機(jī)不在地面的(狀
態(tài))
17. however [ hau'ev ] conj. 然而; 可是
18. a function of … 隨…而變化, …的函數(shù)
19. associate with [ ' souieit ] 與…有聯(lián)系
20. altitude acquire [ ' kwai ] vt. 高度截獲(達(dá)到)
21. active flight plan (正在) 實(shí)施的飛行計(jì)劃
22. originate [ 'rid ineit ] v. 起源;產(chǎn)生; 發(fā)源
　
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