A B757 flight attendant described a cabin depressurization during meal service. Oxygen masks dropped...

Narrative:

Approximately 1 hour 15 min into the flight; flight attendants were in the aisle doing our beverage/meal service when the O2 masks dropped. I shouted to the passengers to pull masks down and put them on while I went from mask to mask as I pushed the cart to the galley. Once in the galley I was joined by flight attendants 4 and 5. We took O2 from the jumpseat O2 masks; carts were stowed. We donned O2 walk-arounds and checked on passengers. Number 1 came to the back to inform us that we were to do a planned emergency checklist. I retrieved my B757 checklist from my manual and took it to 1st class for the brief. We were able to complete the entire list. When I completed my list I checked in with number 1; checked on the passengers on my way back to my jumpseat; buckled up and landed without further incident.the aircraft had a history of mechanical problems and had been in the hanger for the past two days; the aircraft came directly from the hanger. I do not know why this happened. When masks dropped all flight attendants worked together well; preformed duties per company procedures flawlessly. Even I was impressed! It is very difficult for parents to keep O2 masks on small children. We had four little people on board...they could not get in either of the 'brace positions'.

Original NASA ASRS Text

Title: A B757 Flight Attendant described a cabin depressurization during meal service. Oxygen masks dropped. Procedures went well except that parents could not keep masks on small children.

Narrative: Approximately 1 hour 15 min into the flight; flight attendants were in the aisle doing our beverage/meal service when the O2 masks dropped. I shouted to the passengers to pull masks down and put them on while I went from mask to mask as I pushed the cart to the galley. Once in the galley I was joined by Flight Attendants 4 and 5. We took O2 from the jumpseat O2 masks; carts were stowed. We donned O2 walk-arounds and checked on passengers. Number 1 came to the back to inform us that we were to do a planned emergency checklist. I retrieved my B757 checklist from my manual and took it to 1st Class for the brief. We were able to complete the entire list. When I completed my list I checked in with Number 1; checked on the passengers on my way back to my jumpseat; buckled up and landed without further incident.The aircraft had a history of mechanical problems and had been in the hanger for the past two days; the aircraft came directly from the hanger. I do not know why this happened. When masks dropped all flight attendants worked together well; preformed duties per company procedures flawlessly. Even I was impressed! It is very difficult for parents to keep O2 masks on small children. We had four little people on board...they could not get in either of the 'brace positions'.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	953749
Time
Date	201105
Local Time Of Day	1801-2400
Environment
Light	Night
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Component
Aircraft Component	Pressurization System
Person 1
Function	Flight Attendant (On Duty)
Experience	Flight Attendant Airline Total 31 Flight Attendant Number Of Acft Qualified On 4 Flight Attendant Total 31 Flight Attendant Type 35
Events
Anomaly	Aircraft Equipment Problem Critical

A B757 flight attendant described a cabin depressurization during meal service. Oxygen masks dropped. Procedures went well except that parents could not keep masks on small children.