Aircraft Accident Brief Ntsb/aab-02/01 (Pb2002-910401): Egypt Air Flight 990, Boeing 767-366er, Su-Gap - National Transportation Safety Board Page 73
ADVERTISEMENT
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
32 
33 
34 
35 
36 
37 
38 
39 
40 
41 
42 
43 
44 
45 
46 
47 
48 
49 
50 
51 
52 
53 
54 
55 
56 
57 
58 
59 
60 
61 
62 
63 
64 
65 
66 
67 
68 
69 
70 
71 
72 
73 
74 
75 
76 
77 
78 
79 
80 
81 
82 
83 
84 
85 
86 
87 
88 
89 
90 
91 
92 
93 
94 
95 
96 
97 
98 
99 
100 
101 
102 
103 
104 
105 
106 
107 
108 
109 
110 
111 
112 
113 
114 
115 
116 
117 
118 
119 
120 
121 
122 
123 
124 
125 
126 
127 
128 
129 
130 
131 
132 
133 
134 
135 
136 
137 
138 
139 
140 
141 
142 
143 
144 
145 
146 
147 
148 
149 
150 
151 
152 
153 
154 
155 
156 
157 
158 
159 
160 67
3. The accident airplane’s movements after the command captain returned to the
cockpit were the result of both pilots’ inputs, including opposing elevator
inputs where the relief first officer continued to command nose-down and the
captain commanded nose-up elevator movements.
Nose-up elevator movements began only after the captain returned to the
cockpit.
Testing showed that recovery of the airplane was possible but not
accomplished.
Seconds after the nose-up elevator movements began, the elevator surfaces
began moving in different directions, with the captain’s control column
commanding nose-up movement and the relief first officer’s control column
commanding nose-down movement.
After the elevator split began, the relief first officer shut down the engines.
The captain repeatedly asked the relief first officer to “pull with me,” but the
relief first officer continued to command nose-down elevator movement.
The captain’s actions were consistent with an attempt to recover the accident
airplane and the relief first officer’s were not.
Probable Cause
The National Transportation Safety Board determines that the probable cause of
the EgyptAir flight 990 accident is the airplane’s departure from normal cruise flight and
subsequent impact with the Atlantic Ocean as a result of the relief first officer’s flight
control inputs. The reason for the relief first officer’s actions was not determined.
NTSB/AAB-02/01
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Legal