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Noise from 1 of the pressurization system caused an medium large transport flight crew to divert land overweight.
| Attributes | |
| ACN | 310161 |
| Time | |
| Date | 199507 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : gso |
| State Reference | NC |
| Altitude | msl bound lower : 31000 msl bound upper : 32000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time total : 8000 |
| ASRS Report | 310161 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Left aircraft pack made loud sudden noise and was turned off climbing through FL310. Pressurization normal and continued climb. Passing FL320 noticed a grinding noise from left pack area. Descended to FL310 then decided to divert to clt because of noise. Landed 4000 pounds overweight. I did not declare emergency.
Original NASA ASRS Text
Title: NOISE FROM 1 OF THE PRESSURIZATION SYS CAUSED AN MLG FLC TO DIVERT LAND OVERWT.
Narrative: L ACFT PACK MADE LOUD SUDDEN NOISE AND WAS TURNED OFF CLBING THROUGH FL310. PRESSURIZATION NORMAL AND CONTINUED CLB. PASSING FL320 NOTICED A GRINDING NOISE FROM L PACK AREA. DSNDED TO FL310 THEN DECIDED TO DIVERT TO CLT BECAUSE OF NOISE. LANDED 4000 LBS OVERWT. I DID NOT DECLARE EMER.
Data retrieved from NASA's ASRS site as of July 2007 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.