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Evidence from Resource 16 pieces of evidence from this resource.

Lyall, E.A. (1990). The effects of mixed-fleet flying of the Boeing 737-200 and -300. America West Airlines Technical Report AWA01-90-01. Phoenix, AZ: America West Airlines.

  1.  
  2. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding workload: "3. Rate the difference in the mental [emphasized] workload required by the [B737-] 200 and [B737-] 300?" Out of a total of 201 responses, 115 pilots [57%] responded that the mental workload required is "higher" in the 200, 50 pilots [25%] responded that the mental workload required is "higher" in the 300, and 36 pilots [18%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page (3))
    Issue: automation may adversely affect pilot workload (Issue #79) See Issue details
    Strength: +2
    Aircraft: B737
    Equipment: automation

  3.  
  4. Evidence Type: Excerpt from Survey
    Evidence: In response to the following statement: "43. The new equipment is more reliable than the old." 70% of the pilots either strongly agreed or agreed while 9% of the pilots either strongly disagreed or disagreed. 21% of the pilots were neutral. (page 17)
    Issue: pilots may lack confidence in automation (Issue #46) See Issue details
    Strength: +1
    Aircraft: B737
    Equipment: automation

  5.  
  6. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding communication: "2. Do you think that the amount of total communication in the cockpit is different in the 200 and the 300?" Out of a total of 195 responses, 20 pilots [10%] responded that there is more in the 200, 41 pilots [21%] responded that there is more in the 300, and 134 pilots [69%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page ?)
    Issue: inter-pilot communication may be reduced (Issue #139) See Issue details
    Strength: +1
    Aircraft: B737
    Equipment: automation

  7.  
  8. Evidence Type: Excerpt from Survey
    Evidence: In response to the following statement: "25. I am concerned about the reliability of some of the modern equipment." 24% of the pilots either strongly agreed or agreed while 57% of the pilots either strongly disagreed or disagreed. 19% of the pilots were neutral. (page 16)
    Issue: pilots may lack confidence in automation (Issue #46) See Issue details
    Strength: +1
    Aircraft: B737
    Equipment: automation

  9.  
  10. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding workload: "2. Rate the difference in the physical [emphasized] workload required by the [B737-] 200 and [B737-] 300?" Out of a total of 202 responses, 120 pilots [59%] responded that the physical workload required is "higher" in the 200, 26 pilots [13%] responded that the physical workload required is "higher" in the 300, and 56 pilots [28%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page (3))
    Issue: automation may adversely affect pilot workload (Issue #79) See Issue details
    Strength: +1
    Aircraft: B737
    Equipment: automation

  11.  
  12. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding workload: "1. Rate the difference in the overall [emphasized] workload required by the [B737-] 200 and [B737-] 300?" Out of a total of 199 responses, 125 pilots [63%] responded that the overall workload required is "higher" in the 200, 40 pilots [20%] responded that the overall workload required is "higher" in the 300, and 34 pilots [17%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page (2))
    Issue: automation may adversely affect pilot workload (Issue #79) See Issue details
    Strength: +1
    Aircraft: B737
    Equipment: automation

  13.  
  14. Evidence Type: Excerpt from Survey
    Evidence: In response to the following statement: "42. Automation reduces overall workload." 70% of the pilots either strongly agreed or agreed while 15% of the pilots either strongly disagreed or disagreed. 15% of the pilots were neutral. (page (17))
    Issue: automation may adversely affect pilot workload (Issue #79) See Issue details
    Strength: +1
    Aircraft: B737
    Equipment: automation

  15.  
  16. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding communication: "1. Do you think that the amount of verbal communication between pilots in the cockpit is different in the 200 and the 300?" Out of a total of 199 responses, 28 pilots [14%] responded that there is more in the 200, 51pilots [26%] responded that there is more in the 300, and 120 pilots [60%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page ?)
    Issue: inter-pilot communication may be reduced (Issue #139) See Issue details
    Strength: +1
    Aircraft: B737
    Equipment: automation

  17.  
  18. Evidence Type: Excerpt from Survey
    Evidence: In response to the following statement: "25. I am concerned about the reliability of some of the modern equipment." 24% of the pilots either strongly agreed or agreed while 57% of the pilots either strongly disagreed or disagreed. 19% of the pilots were neutral. (page 16)
    Issue: pilots may lack confidence in automation (Issue #46) See Issue details
    Strength: -3
    Aircraft: B737
    Equipment: automation

  19.  
  20. Evidence Type: Excerpt from Survey
    Evidence: In response to the following statement: "43. The new equipment is more reliable than the old." 70% of the pilots either strongly agreed or agreed while 9% of the pilots either strongly disagreed or disagreed. 21% of the pilots were neutral. (page 17)
    Issue: pilots may lack confidence in automation (Issue #46) See Issue details
    Strength: -3
    Aircraft: B737
    Equipment: automation

  21.  
  22. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding workload: "2. Rate the difference in the physical [emphasized] workload required by the [B737-] 200 and [B737-] 300?" Out of a total of 202 responses, 120 pilots [59%] responded that the physical workload required is "higher" in the 200, 26 pilots [13%] responded that the physical workload required is "higher" in the 300, and 56 pilots [28%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page (3))
    Issue: automation may adversely affect pilot workload (Issue #79) See Issue details
    Strength: -3
    Aircraft: unspecified
    Equipment: automation

  23.  
  24. Evidence Type: Excerpt from Survey
    Evidence: In response to the following statement: "42. Automation reduces overall workload." 70% of the pilots either strongly agreed or agreed while 15% of the pilots either strongly disagreed or disagreed. 15% of the pilots were neutral. (page (17))
    Issue: automation may adversely affect pilot workload (Issue #79) See Issue details
    Strength: -3
    Aircraft: B737
    Equipment: automation

  25.  
  26. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding workload: "3. Rate the difference in the mental [emphasized] workload required by the [B737-] 200 and [B737-] 300?" Out of a total of 201 responses, 115 pilots [57%] responded that the mental workload required is "higher" in the 200, 50 pilots [25%] responded that the mental workload required is "higher" in the 300, and 36 pilots [18%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page (3))
    Issue: automation may adversely affect pilot workload (Issue #79) See Issue details
    Strength: -4
    Aircraft: B737
    Equipment: automation

  27.  
  28. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding communication: "1. Do you think that the amount of verbal communication between pilots in he cockpit is different in the 200 and the 300?" Out of a total of 199 responses, 28 pilots [14%] responded that there is more in the 200, 51pilots [26%] responded that there is more in the 300, and 120 pilots [60%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page ?)
    Issue: inter-pilot communication may be reduced (Issue #139) See Issue details
    Strength: -4
    Aircraft: B737
    Equipment: automation

  29.  
  30. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding workload: "1. Rate the difference in the overall [emphasized] workload required by the [B737-] 200 and [B737-] 300?" Out of a total of 199 responses, 125 pilots [63%] responded that the overall workload required is "higher" in the 200, 40 pilots [20%] responded that the overall workload required is "higher" in the 300, and 34 pilots [17%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page (2))
    Issue: automation may adversely affect pilot workload (Issue #79) See Issue details
    Strength: -4
    Aircraft: B737
    Equipment: automation

  31.  
  32. Evidence Type: Excerpt from Survey
    Evidence: In response to the survey question regarding communication: "2. Do you think that the amount of total communication in the cockpit is different in the 200 and the 300?" Out of a total of 195 responses, 20 pilots [10%] responded that there is more in the 200, 41 pilots [21%] responded that there is more in the 300, and 134 pilots [69%] responded that the amount is the same in the 200 and 300. (This data from an unpublished addendum to the report.) (page ?)
    Issue: inter-pilot communication may be reduced (Issue #139) See Issue details
    Strength: -5
    Aircraft: B737
    Equipment: automation
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