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detected by the BITE of the FMC.
[6] The FMCS has a set of messages which are displayed in the scratch
pad of the CDU when conditions warrant their appearance. The three
categories of messages, listed in order of highest priority, are:
 Alerting messages
 Entry error advisory messages
 Advisory messages
Alerting messages indicate to the crew some condition which must be
acknowledged and remedied by them before further FMCS-guided flight
is advisable or possible. These messages appear on both CDUs. The entry
error advisory messages indicate to the crew that an entry of data from
the scratch pad into a data field is not correct. The crew must clear the
message and repeat the entry in the proper manner. These messages
appear only on the CDU on which the data entry attempt was made. The
advisory message indicate system status regarding readiness for
operation or prediction of profile parameters. These messages appear on
both CDUs. Existence of a message in the scratch pad on any page, even
if the page on which the message appears is not currently displayed on
the CRT, will illuminate the CDU's MSG light.
[7] The FAIL and MSG annunciators are replaced by loosening two
captive screws which secure the annunciator cover to the CDU and then
replacing the faulty bulb assembly . The lighted execute ( EXEC) key is
replaced by loosening two captive screws securing the execute key
assembly and then removing the key assembly from its housing. The
entire lighted switch panel is replaced by releasing the six captive screws
which secure the switch panel to the CDU.
READING MATERIAL
QUESTIONS TO LESSON 37 READING MATERIAL
1. where is the FMCS navigation data base stored?
2. what contents does the 2 parts of navigation data base contain?
3. where are the effectivity dates displayed?
4. The navigation data base contains all information required for
operation in a specified geographic area. What does this information
include data for?
5. How can the new data base be loaded into the FMC?
6. Is the data base loader a Boeing supplied item?
7. Where does the data base loader transfer data from?
8. What electric power does the data base loader receive?
9. What on the data base loader controls the loading process?
10. The data base loader runs a self test when the power is applied to the
FMC. How to find the failure of the self test?
11. When does the data loading occur automatically?
EXERCISE
A. Find out the explanations of the following words in your"
English-chinese technical dictionary"
1. CRT = Cathod Ray Tube [P1-27]
2. scratch pad [P1-130]
3. line select keys [ P1-92]
4. delete [ P1-41]
B. Translate lst, 2nd and 4th paragraphs of lesson 37 into chinese.
C. Explain the following abbreviations and acronyms .
1. ANCDU
2. CDU
3. CLR
4. CRZ
5. DES
6. INIT/REF
7. DEP/ARR
8. EXEC
9. DEL
10. PREV
11. DBL
D. Answer the questions 1～11 that are given for lesson 37 reading
material.
LESSON 38
CONTROL PANEL AND INSTRUMENT FOR DFCS
VOCABULARY
1. describe [ dis' kraib ] vt. 描述; 說明
2. intend [ in' tend ] vt. 打算; 意圖是
3. supplemental [ spli' mentl ] a. 補充的;輔助的
4. typical [ 'tipikl ] a. 典型的;標準的
5. CWS=Control Wheel Steering 駕駛盤操縱
6. applicable [ 'æplikbl ] a. 適用的; 可用的
7. de-selected 再選
8. PB=pushbutton [ 'pubtn ] n. 按鈕
9. encoder [ in' koud ] n. 編碼器
10. rather than [ 'ra:ð ] adv. 而不(是)
11. digital readout [ 'did itl ] [ 'ri:daut ] 數(shù)字讀數(shù)
12. underspeed [ 'nd'spi:d ] n. 速度不夠; 低速
13. overspeed [ ouv' spi:d ] n; v. 超速;過速
14. except [ ik'sept ] prep. 除…之外; conj. 除非
15. placard [ 'plæka:d ] n. 標牌;限速卡
16. steady [ 'stedi ] a. 穩(wěn)定的;穩(wěn)態(tài)的
17. malfunction [ mæl'fkn ] n. 不正常工作;故障
18. R-TO = Reduced Takeoff 減推力起飛
19. R-CLIMB = Reduced Climb 減推力爬升
20. CON = Continuous or Maximum Continuous Thrust
連續(xù)或最大連續(xù)推力
21. no computed data (NCD) 無計算數(shù)據(jù)
22. instead of [ in' sted ] 代替; 而不(是)
23. bias [ 'bais ] n. 偏移
24. cut off 刪去; 斷開
25. arrow [ 'ærou ] n. 箭頭
26. represent [ repri' zent ] v. 代表; 相當于;表示
TEXT
[1] The digital flight control system (DFCS) operational procedure
integrates the functions of the autopilot (A/P), flight director (F/D),
autothrottle (A/T), altitude alert, stabilizer trim, mach trim, and speed
　
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