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A captain reports that during initial climb he noticed the airflow in the erj-190 cockpit was surging. Both engine bleeds were erratic and rapidly surging from 0 to 78 psi. Crew returned to departure airport due to concerns for losing cabin pressurization at cruising altitude of FL380.
| Attributes | |
| ACN | 1231425 |
| Time | |
| Date | 201501 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.TRACON |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 190/195 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | VFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
On initial takeoff and climb; I noticed that airflow in the cockpit was surging. I remembered that in january 2015; there was a write-up in the aircraft maintenance logbook (aml) regarding a problem with both engine bleeds. When I looked in the environmental control system (ecs) page; I noticed that bleed 1 and 2 output was erratic and rapidly surging from 0 to 78 psi. I contacted local ZZZ maintenance over the radio. I sent a message to dispatcher and copied maintenance control. The rate that the cabin was being pressurized was erratic. I made the decision to return to ZZZ due to safety concerns that we could lose pressurization at our cruising altitude (FL380). I sent a message via ACARS to the dispatcher [about] the diversion. No emergency was declared. No overweight landing performed (landed at 93;000 lbs. Which is 4;000 lbs below maximum landing weight). I made an entry on the aml upon gate arrival in ZZZ. Erratic pressure output of both engine bleed 1 and 2. Captain EMB190. Air turnback.
Original NASA ASRS Text
Title: A Captain reports that during initial climb he noticed the airflow in the ERJ-190 cockpit was surging. Both engine bleeds were erratic and rapidly surging from 0 to 78 psi. Crew returned to departure airport due to concerns for losing cabin pressurization at cruising altitude of FL380.
Narrative: On initial takeoff and climb; I noticed that airflow in the cockpit was surging. I remembered that in January 2015; there was a write-up in the Aircraft Maintenance Logbook (AML) regarding a problem with both engine bleeds. When I looked in the Environmental Control System (ECS) page; I noticed that bleed 1 and 2 output was erratic and rapidly surging from 0 to 78 psi. I contacted local ZZZ Maintenance over the radio. I sent a message to dispatcher and copied Maintenance Control. The rate that the cabin was being pressurized was erratic. I made the decision to return to ZZZ due to safety concerns that we could lose pressurization at our cruising altitude (FL380). I sent a message via ACARS to the dispatcher [about] the diversion. No emergency was declared. No overweight landing performed (landed at 93;000 lbs. which is 4;000 lbs below maximum landing weight). I made an entry on the AML upon gate arrival in ZZZ. Erratic pressure output of both engine bleed 1 and 2. Captain EMB190. Air turnback.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.