Close-Up: Aeroperu 603 – Alarms Activity From Voice Recorder

A time-line of mechanical alerts received by the cockpit crew of Aeroperu Flight 603.

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Aeroperu 603 (Boeing 757)

Alarms Activity From Voice Recorder

October 2, 1996 – Lima, Peru

01:57 — Windshear Alarm – Three Times

02:49 — Rudder Ratio Alarm

03:14 — Mach Trim

04:02 — Caution Alarm

04:05 — Alert Alarm

04:54 — Auto Throttle Disconnect, Rudder Ratio & Mach Speed Trim

05:42 — A One Hertz Sound Begins And Remains

09:56 — Alert

10:04 — Unknown Sound

10:17 — Sound Similar To Alert

11:43 — Sound Similar To Alert

14:33 — Sound Similar To Alert

14:50 — Caution Alarm

16:53 — Alert Sound For 10 Seconds

16:55 — Overspeed Alarm

18:08 — Sound Of Beat

18:52 — Two Tone Over Speed Alarm (Will Keep On Until The End Of The Recording)

19:10 — Stall Warning Alarm

19:18 — Stall Warning Alarm

19:24 — Stall Warning Alarm

19:29 — Stall Warning Alarm

20:59 — Double Alert Alarm

22:17 — Alert Alarm

22:27 — Mechanical Alert Voice “Too Low Terrain” (For 45 Seconds, 22 Times)

23:03 — Mechanical Voice Of “Windshear” Alarm (Three Times)

23:07 — Mechanical Alert Voice “Too Low Terrain” (For 15 Seconds)

23:14 — Mechanical Voice Of “Windshear” Alarm (Three Times)

23:40 — Sound Of Alert Alarm

24:07 — Mechanical Alert Voice “Sink Rate” (Four Times) Plus Alert Alarm

27:50 — Caution Alarm

28:24 — Altitude Alarm

29:26 — Caution Alarm

29:33 — Caution Alarm

29:42 — Caution Alarm

29:53 — Caution Alarm

30:00 — Mechanical Voice “Too Low Terrain” (Remains Until The End Of Recording)

30:04 — Caution Alarm

30:40 — Sound Of Impact

30:41 — Caution Alarm

30:50 — Mechanical Voice Sound “Too Low Terrain” Stops

30:56 — Caution Alarm

30:57 — Mechanical Voice “Whoop… Whoop… Pu…”

30:59 — Sound Of Impact