An Aeromexico Boeing 737-9 MAX, registration N115AM performing flight AM-334 from Mexico City to Puerto Vallarta (Mexico), was on final approach to Puerto Vallarta's runway 22 descending through about 800 feet MSL when the crew decided to go around. The aircraft climbed to about 1200 feet MSL accelerating from about 164 knots over ground to about 190 knots, then began a descent again to 700 feet MSL further accelerating to about 250 knots over ground before the aircraft began to climb again reaching 7000 feet MSL. The aircraft positioned for another approach to runway 22 and landed normally and without further incident about 15 minutes after the go around.
A pair of passengers, both Air Traffic Controllers with 25 and 30 years of professional experience, told The Aviation Herald, the flight had been entirely normal until the approach, but then they became puzzled about the high approach speed and high descent rate. As expected by the ATCs the aircraft initiated a go around, which went very different however with the aircraft descending and accelerating, the ATCs suspected EGPWS must have alarmed the pilots.
ADS-B data transmitted by the aircraft show a descent rate of about 1900 fpm at 925 ft MSL before initiating the go around, during the go around the initial rate of climb turned into a rate of descent of about 1300 fpm before the aircraft finally entered a stable climb.
Metars:
MMPR 192141Z 23010KT 13SM SKC 26/21 A2991 RMK HZY=
MMPR 192043Z 20008KT 13SM SKC 27/20 A2994 RMK SLP131 57021 957 HZY=
MMPR 191944Z 23012KT 13SM SKC 26/19 A2996 RMK HZY=
MMPR 191840Z 23008KT 13SM SKC 27/19 A2999 RMK HZY=
MMPR 191745Z 23006KT 13SM SKC 27/19 A3000 RMK SLP152 52005 957 HZY=
MMPR 191641Z 25006KT 15SM SKC 27/17 A3000=
Flight trajectory (Graphics: AVH/Google Earth):
A pair of passengers, both Air Traffic Controllers with 25 and 30 years of professional experience, told The Aviation Herald, the flight had been entirely normal until the approach, but then they became puzzled about the high approach speed and high descent rate. As expected by the ATCs the aircraft initiated a go around, which went very different however with the aircraft descending and accelerating, the ATCs suspected EGPWS must have alarmed the pilots.
ADS-B data transmitted by the aircraft show a descent rate of about 1900 fpm at 925 ft MSL before initiating the go around, during the go around the initial rate of climb turned into a rate of descent of about 1300 fpm before the aircraft finally entered a stable climb.
Metars:
MMPR 192141Z 23010KT 13SM SKC 26/21 A2991 RMK HZY=
MMPR 192043Z 20008KT 13SM SKC 27/20 A2994 RMK SLP131 57021 957 HZY=
MMPR 191944Z 23012KT 13SM SKC 26/19 A2996 RMK HZY=
MMPR 191840Z 23008KT 13SM SKC 27/19 A2999 RMK HZY=
MMPR 191745Z 23006KT 13SM SKC 27/19 A3000 RMK SLP152 52005 957 HZY=
MMPR 191641Z 25006KT 15SM SKC 27/17 A3000=
Flight trajectory (Graphics: AVH/Google Earth):
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