224:
had been hired by
Formosa Airlines in October of the previous year, and was still in line training at the time of the accident, and with only 305 total flight hours, 44 hours were on the Saab 340. Sitting in the observer's seat was 40-year-old First Officer Cheu Der-kun, also a retired Air Force pilot, he was scheduled to be on this flight to familiarize himself with the aircraft, as he had been promoted to be trained as a Saab 340 captain. He had a total of 5,588 flight hours, including 613 hours on the Saab 340. On-board was 53-year-old mechanic Wu Kai-ying, who had been working on the Saab 340 since he was hired by Formosa Airlines 8 years ago.
27:
245:
nose-up pitch and 24° right bank, which increased by one every second. After the captain said "Ask for radar vectors" he also made a small right aileron input, worsening the bank. At the last moments of the flight, right aileron commands were inputted, and the aircraft, 161 seconds after take-off, crashed into the ocean, pitched down 65°. None of the 13 occupants survived.
237:
weren't made. The more than 30 °C ITT split between engines had a little effect on the aircraft, but only when the crew reduced power on the No. 2 engine, 30 seconds later, probably to reduce the ITT. This caused the No. 2 engine to have 13% less torque, leading to rolling and yawing to the right, which required constant left aileron.
223:
The commander of the flight was 43-year-old
Captain Fei Kuo-pang, a line instructor and a former Air Force veteran who joined Formosa Airlines in 1989, and had clocked about 11,000 total flight hours, including 6,455 hours on the Saab 340. The co-pilot was 28-year-old First Officer Hung Chi-ping, who
240:
The flaps, which were supposed to be retracted at 1,000 feet, weren't retracted until the plane almost reached the maximum allowed speed with flaps deployed. When the climb power was set, a symmetric Power Lever Angle (PLA) change was made. However, due to the earlier RH PLA pull in combination with
236:
According to the
Minimum Equipment List (MEL), take-off with a Main Bus offline was prohibited, but the flight took off from runway 05 at 19:29 anyway. Due to the autopilot failure, the plane had to be flown manually. Since the yaw-damper also failed, rudder inputs would have been required, but they
232:
During pre-flight checks, a failure of the right-hand main bus was noticed, which caused the following systems to be unavailable: the left-hand electronic flight instrument system (EFIS), the EFIS Comparators, LH/RH Flight
Directors, LH RMI, autopilot, yaw-damper and others. Also, the No. 2 engine
244:
The aircraft started to turn to the right, and the rate of climb started decreasing. The co-pilot transmitted to ATC: "Left 230, Bravo 12255", while the plane was at 21° degrees of right bank. 10 seconds later, the captain asked for assistance with his heading, during which the plane was in a 10°
253:
The RH Main Bus failure meant that the airplane couldn't take off according to the MEL. However, the pilots ignored this. The flight taking place at night in
Instrument Meteorological Conditions (IMC), pilot fatigue (the captain was on duty for more than 11 hours), and system failures probably
241:
the normal backlash in the power lever cables between the PLA and the Hydro-Mechanical Unit (HMU), the RH engine torque was decreased while the LH engine torque remained unchanged. This resulted in an even greater asymmetry.
756:
445:
254:
contributed to the loss of situational awareness and spatial disorientation, which caused the aircraft to bank further and further to the right. The crew also failed to follow standard operating procedures.
751:
761:
438:
689:
741:
736:
717:
711:
431:
529:
569:
559:
699:
766:
579:
771:
233:
anti-ice start-bleed valve was left open because of this, which caused its ITT to be 15 °C higher than normal on that power.
649:
455:
208:. On 18 March 1998, it crashed into the ocean shortly after take-off in a severe right bank, killing all 13 occupants on-board.
144:
539:
489:
619:
609:
599:
499:
639:
509:
220:. Registered B-12255, it had been manufactured in April 1993 and had since then accumulated 8,076 flight hours.
268:
746:
479:
629:
549:
113:
296:
669:
659:
326:
273:
263:
423:
403:
379:
679:
589:
355:
297:"AIRCRAFT ACCIDENT INVESTIGATION REPORT – Formosa Airlines SAAB-340, B-12255 March 18, 1998"
98:
126:
69:
60:
Spatial disorientation, loss of control and subsequent crash due to electrical failure
26:
730:
205:
148:
217:
88:
201:
130:
134:
73:
404:"Formosa Hsinchu-Kaohsiung flight crashes into the sea, 13 killed"
427:
356:"ASN Aircraft accident Saab 340B B-12255 Hsinchu Airport (HSZ)"
31:
B-12255, the aircraft involved in the accident in
October 1994
757:
Airliner accidents and incidents caused by electrical failure
302:. Civil Aeronautics Administration M.O.T.C. 5 June 2001
752:
Airliner accidents and incidents caused by pilot error
187:
179:
171:
163:
155:
140:
122:
112:
104:
94:
84:
79:
64:
56:
41:
36:
762:Accidents and incidents involving the Saab 340
690:Lignes Aériennes Congolaises Boeing 727 crash
439:
8:
327:"Crash of a Saab 340 off Hsinchu: 13 Killed"
19:
742:Aviation accidents and incidents in Taiwan
570:Pakistan International Airlines Flight 544
446:
432:
424:
25:
18:
737:Aviation accidents and incidents in 1998
530:Ariana Afghan Airlines Boeing 727 crash
285:
321:
319:
317:
700:Thai Airways International Flight 261
560:Occidental Petroleum Boeing 737 crash
350:
348:
346:
7:
291:
289:
380:"Formosa Airlines Press Conference"
14:
456:Aviation accidents and incidents
310:– via aviation-safety.net.
145:Kaohsiung International Airport
540:Philippine Airlines Flight 137
1:
650:Cubana de Aviación Flight 389
580:MIAT Mongolian Airlines crash
520:Formosa Airlines Flight 7623
216:The aircraft involved was a
198:Formosa Airlines Flight 7623
68:9 kilometers northwest from
20:Formosa Airlines Flight 7623
620:Proteus Airlines Flight 706
200:was a domestic flight from
788:
610:Indian Airlines Flight 503
600:United Airlines Flight 863
767:March 1998 events in Asia
709:
640:Myanma Airways Flight 635
510:China Airlines Flight 676
471:
24:
772:1998 disasters in Taiwan
490:Cavalese cable car crash
269:Kenya Airways Flight 507
480:Cebu Pacific Flight 387
45:18 March 1998
630:Korean Air Flight 8702
16:1998 aviation accident
550:Air France Flight 422
500:Sudan Air Force crash
670:PauknAir Flight 4101
718:► 1999
712:1997 ◄
660:Swissair Flight 111
360:aviation-safety.net
274:Adam Air Flight 574
264:Crossair Flight 498
21:
715:
680:Lionair Flight 602
590:Propair Flight 420
85:Aircraft type
724:
723:
331:www.baaa-acro.com
212:Aircraft and crew
195:
194:
779:
716:
466:
465:
463:
448:
441:
434:
425:
418:
417:
415:
414:
400:
394:
393:
391:
390:
376:
370:
369:
367:
366:
352:
341:
340:
338:
337:
323:
312:
311:
309:
307:
301:
293:
99:Formosa Airlines
52:
50:
29:
22:
787:
786:
782:
781:
780:
778:
777:
776:
727:
726:
725:
720:
714:
705:
704:
703:
702:
697:
693:
692:
687:
683:
682:
677:
673:
672:
667:
663:
662:
657:
653:
652:
647:
643:
642:
637:
633:
632:
627:
623:
622:
617:
613:
612:
607:
603:
602:
597:
593:
592:
587:
583:
582:
577:
573:
572:
567:
563:
562:
557:
553:
552:
547:
543:
542:
537:
533:
532:
527:
523:
522:
517:
513:
512:
507:
503:
502:
497:
493:
492:
487:
483:
482:
477:
467:
461:
459:
454:
452:
422:
421:
412:
410:
408:news.cts.com.tw
402:
401:
397:
388:
386:
384:news.cts.com.tw
378:
377:
373:
364:
362:
354:
353:
344:
335:
333:
325:
324:
315:
305:
303:
299:
295:
294:
287:
282:
260:
251:
230:
214:
127:Hsinchu Airport
70:Hsinchu Airport
48:
46:
32:
17:
12:
11:
5:
785:
783:
775:
774:
769:
764:
759:
754:
749:
747:1998 in Taiwan
744:
739:
729:
728:
722:
721:
710:
707:
706:
698:
695:
694:
688:
685:
684:
678:
675:
674:
668:
665:
664:
658:
655:
654:
648:
645:
644:
638:
635:
634:
628:
625:
624:
618:
615:
614:
608:
605:
604:
598:
595:
594:
588:
585:
584:
578:
575:
574:
568:
565:
564:
558:
555:
554:
548:
545:
544:
538:
535:
534:
528:
525:
524:
518:
515:
514:
508:
505:
504:
498:
495:
494:
488:
485:
484:
478:
475:
474:
473:
472:
469:
468:
453:
451:
450:
443:
436:
428:
420:
419:
395:
371:
342:
313:
284:
283:
281:
278:
277:
276:
271:
266:
259:
256:
250:
247:
229:
226:
213:
210:
193:
192:
189:
185:
184:
181:
177:
176:
173:
169:
168:
165:
161:
160:
157:
153:
152:
142:
138:
137:
124:
120:
119:
116:
110:
109:
106:
102:
101:
96:
92:
91:
86:
82:
81:
77:
76:
66:
62:
61:
58:
54:
53:
43:
39:
38:
34:
33:
30:
15:
13:
10:
9:
6:
4:
3:
2:
784:
773:
770:
768:
765:
763:
760:
758:
755:
753:
750:
748:
745:
743:
740:
738:
735:
734:
732:
719:
713:
708:
701:
691:
681:
671:
661:
651:
641:
631:
621:
611:
601:
591:
581:
571:
561:
551:
541:
531:
521:
511:
501:
491:
481:
470:
457:
449:
444:
442:
437:
435:
430:
429:
426:
409:
405:
399:
396:
385:
381:
375:
372:
361:
357:
351:
349:
347:
343:
332:
328:
322:
320:
318:
314:
298:
292:
290:
286:
279:
275:
272:
270:
267:
265:
262:
261:
257:
255:
249:Investigation
248:
246:
242:
238:
234:
227:
225:
221:
219:
211:
209:
207:
203:
199:
190:
186:
182:
178:
174:
170:
166:
162:
158:
154:
150:
146:
143:
139:
136:
132:
128:
125:
123:Flight origin
121:
117:
115:
111:
107:
103:
100:
97:
93:
90:
87:
83:
78:
75:
71:
67:
63:
59:
55:
44:
40:
35:
28:
23:
519:
411:. Retrieved
407:
398:
387:. Retrieved
383:
374:
363:. Retrieved
359:
334:. Retrieved
330:
304:. Retrieved
252:
243:
239:
235:
231:
222:
215:
197:
196:
114:Registration
141:Destination
108:BRAVO 12255
731:Categories
413:2022-03-31
389:2022-03-29
365:2022-03-31
336:2022-03-26
280:References
180:Fatalities
164:Passengers
49:1998-03-18
218:Saab 340B
206:Kaohsiung
188:Survivors
156:Occupants
149:Kaohsiung
105:Call sign
89:Saab 340B
258:See also
151:, Taiwan
95:Operator
80:Aircraft
37:Accident
460: (
458:in 1998
306:23 July
202:Hsinchu
131:Hsinchu
118:B-12255
57:Summary
47: (
696:Dec 11
686:Oct 10
676:Sep 29
666:Sep 25
646:Aug 29
636:Aug 24
616:Jul 30
606:Jul 30
596:Jun 28
586:Jun 18
576:May 26
566:May 25
546:Apr 20
536:Mar 22
526:Mar 19
516:Mar 18
506:Feb 16
496:Feb 12
228:Flight
135:Taiwan
74:Taiwan
656:Sep 2
626:Aug 5
556:May 5
486:Feb 3
476:Feb 2
300:(PDF)
462:1998
308:2024
172:Crew
65:Site
42:Date
204:to
733::
406:.
382:.
358:.
345:^
329:.
316:^
288:^
183:13
159:13
147:,
133:,
129:,
72:,
464:)
447:e
440:t
433:v
416:.
392:.
368:.
339:.
191:0
175:5
167:8
51:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
