Operating Temperature Limitations
Thread Starter
Join Date: Jan 2013
Location: greece
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
Temperature limits
Hello,
I wonder if you guys know the operating temperature limitations of the following helicopters (or at least know some website that i can find such information)
Bell UH-1H
Bell AB204
Bell AB205
Bell AB206
Bell AB212
Bell AH-1P
Bell OH-38
Sikorsky S-70
Eurocopter AS532
Boing CH-47F
AgustaWestland T129 (Atak) (if possible)
I have been searching for this information but can not find such a thing. I will really appriciate it and send imaginary cheesecakes and coffees for those who help =) (its late, im still at work and i really want some atm)
I wonder if you guys know the operating temperature limitations of the following helicopters (or at least know some website that i can find such information)
Bell UH-1H
Bell AB204
Bell AB205
Bell AB206
Bell AB212
Bell AH-1P
Bell OH-38
Sikorsky S-70
Eurocopter AS532
Boing CH-47F
AgustaWestland T129 (Atak) (if possible)
I have been searching for this information but can not find such a thing. I will really appriciate it and send imaginary cheesecakes and coffees for those who help =) (its late, im still at work and i really want some atm)
AS332M1 has temp limit ISA+35celsius (equals +50c at Sea Level).
Think this goes for the as532 as well, not 100% sure though.
[Edit] Ahhh, saw the following posts. Didn't think about low ambient temperatures, its the everyday enviroment for me @ the artic circle.
Min temp about -45C. I think we have som kind of cold weather kit on the AS332.
Think this goes for the as532 as well, not 100% sure though.
[Edit] Ahhh, saw the following posts. Didn't think about low ambient temperatures, its the everyday enviroment for me @ the artic circle.
Min temp about -45C. I think we have som kind of cold weather kit on the AS332.
Last edited by AAKEE; 31st Jan 2013 at 20:16.
These are all I fly, hence all I have access to.
Bell UH-1H:
Temperature Limitation (Hub Spring Aircraft Only). Remove elastomeric springs prior to operating aircraft when OAT is below -20° C (-5°F) or If this temperature is anticipated to occur during flight. If, however, sub -20°C temperatures are encountered during flight change altitude in an attempt to find warmer air Elastomeric springs shall be reinstalled when the OAT is expected to stay above -20°C or the threat of sub 20°'C temperatures no longer exists.
Bell 205:
AMBIENT AIR TEMPERATURE LIMITATIONS
The maximum sea level ambient air temperature for approved operations is +530C, (+127°F) and decreases with altitude at the standard (2.01C/1000 feet) lapse rate. (See Ambient Air Temperature Limit Chart.)
The minimum ambient temperature for approved operations is -54°C (-65°F) for any altitude.
Engine de-icing shall be turned ON for flight in visible moisture at temperatures below +4.4°C (+40°F).
The maximum ambient temperature for use of engine de-icing is +4.4°C (+40°F).
Bell 206L4:
Maximum sea level ambient air temperature for operation is 51.7°C (125°F) and decreases with HP at standard lapse rate of 2°C (3.6°F) per 1000 feet.
Minimum ambient air temperature for operation at all altitudes is -50°C (-54°F).
Maximum ambient temperature for use of engine anti-ice is 5°C (40°F).
ENGINE ANTI-ICING and PITOT HEAT shall be ON in visible moisture when OAT is below +5°C (40°F).
Fuel control heater valve (if installed) shall be ON in ambient temperatures below 10°C (50°F). When operating in ambient temperatures above 21°C (70°F), fuel control heater valve shall be OFF.
Bell 212:
Maximum sea level ambient air temperature for operation is +52°C (+125°F) and decreases with altitude at standard lapse rate (2°C per 1000 feet HP ) . Minimum ambient air temperature at all altitudes is -54°C (-65°F). Refer to Weight-Altitude-Temperature Limitat ions for Takeoff , Landing, and In-Ground Effect Maneuvers Chart (Figure 1-1).
Bell UH-1H:
Temperature Limitation (Hub Spring Aircraft Only). Remove elastomeric springs prior to operating aircraft when OAT is below -20° C (-5°F) or If this temperature is anticipated to occur during flight. If, however, sub -20°C temperatures are encountered during flight change altitude in an attempt to find warmer air Elastomeric springs shall be reinstalled when the OAT is expected to stay above -20°C or the threat of sub 20°'C temperatures no longer exists.
Bell 205:
AMBIENT AIR TEMPERATURE LIMITATIONS
The maximum sea level ambient air temperature for approved operations is +530C, (+127°F) and decreases with altitude at the standard (2.01C/1000 feet) lapse rate. (See Ambient Air Temperature Limit Chart.)
The minimum ambient temperature for approved operations is -54°C (-65°F) for any altitude.
Engine de-icing shall be turned ON for flight in visible moisture at temperatures below +4.4°C (+40°F).
The maximum ambient temperature for use of engine de-icing is +4.4°C (+40°F).
Bell 206L4:
Maximum sea level ambient air temperature for operation is 51.7°C (125°F) and decreases with HP at standard lapse rate of 2°C (3.6°F) per 1000 feet.
Minimum ambient air temperature for operation at all altitudes is -50°C (-54°F).
Maximum ambient temperature for use of engine anti-ice is 5°C (40°F).
ENGINE ANTI-ICING and PITOT HEAT shall be ON in visible moisture when OAT is below +5°C (40°F).
Fuel control heater valve (if installed) shall be ON in ambient temperatures below 10°C (50°F). When operating in ambient temperatures above 21°C (70°F), fuel control heater valve shall be OFF.
Bell 212:
Maximum sea level ambient air temperature for operation is +52°C (+125°F) and decreases with altitude at standard lapse rate (2°C per 1000 feet HP ) . Minimum ambient air temperature at all altitudes is -54°C (-65°F). Refer to Weight-Altitude-Temperature Limitat ions for Takeoff , Landing, and In-Ground Effect Maneuvers Chart (Figure 1-1).
Last edited by Gordy; 31st Jan 2013 at 15:12. Reason: Lining up paragraphs
Join Date: Aug 2001
Location: Cornwall
Age: 75
Posts: 1,307
Likes: 0
Received 0 Likes
on
0 Posts
You may be lucky and find the Bell information in a book on Ancient History
G
PS. At a guess I would say that older types were certified to -40 deg C to +40 deg C and the later ones probably -40 deg C to +50 dec. All these temps refer to Sea Level. If you need to know more about higher altitudes then you will need a copy of the RFM.
G
PS. At a guess I would say that older types were certified to -40 deg C to +40 deg C and the later ones probably -40 deg C to +50 dec. All these temps refer to Sea Level. If you need to know more about higher altitudes then you will need a copy of the RFM.
Last edited by Geoffersincornwall; 31st Jan 2013 at 17:17.
Search for their Type Certificate Data Sheets (TCDS) on the EASA and/or FAA websites. Here's the 332 for example : http://www.easa.europa.eu/certificat...9-14062012.pdf
